How to use DeviceIoControl() to control CF on USB CF Reader?

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  - 1
    - How to use DeviceIoControl() to control CF on USB CF Reader? I am trying to use Win32 DeviceIoControl() API to send ATA command, like WRITE BUFFER command, to control CF card on USB CF Reader. I use CreateFile() to open device handle, like CreateFile(_T("PhysicalDrive4"), ...).It success and return device handle. I don't know how to send standard ATA command in Win32 API. Are there any sample code or someone can help me. Thanks a lot! -- Regards, Goldbach Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109126
  - 2
    - Registry Permission Setting in Windows VIsta Hi all, Can anybody tell how to change the registry subkey's permissions in the path HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum in the windows vista SP1 through API's. Thanks for help in advance. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109123
  - 3
    - Flash memory access hi All, I am trying to read physical address of a flash device. can anyone tell me how to access data with physical address? as there is the disk (SATA) interface and wear leveling algorithem comes into picture. also please tell me is it possible to acces the same in USB thumb drive or not? thanks hitesh Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109121
  - 4
    - ACPI-WMI access during early boot I have a driver that needs to make calls to IoWMIOpenBlock(), etc. during early boot time to get information from the BIOS that is exposed through the ACPI-WMI mapper. I always get WMI_GUID_NOT_FOUND failures if I attempt this during boot. Once the system is fully booted, I can make the calls just fine. My driver has a start type of demand start. I tried changing the start type of acpi.sys, and wmiacpi.sys to boot start, without any success. At what point does wmiacpi.sys become available? Thanks! Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109107
  - 5
    - Some questions on the Windows unidrv and .gpd files Hi, I've been working for some time on a Windows program and the driver it will be printing to. Questions: 1. I want to print a 1728 (width) x 1 (length) pixel bitmap to the printer. Nothing less than 5 for the page length works. My suspicion is that unidrv is calculating a physical page length based on the logical page length I'm giving it (1 pixel), and the printer's resolution (8 x 8 pixels per mm). 4 scan lines and less rounds to a page length of 0. 5 and up rounds to a length of 1. Has anyone else had a similar experience? Or can someone suggest a workaround? 2. Unidrv always sends data blocks of 4080 bytes to the printer. Is this set in stone or can it be modified? GDI call to send the bitmap to the printer: nRetVal = StretchDIBits(m_pPrinterDC->m_hDC, 0, 0, 1728, 1, 0, 0, 1728, 1, (const void*) &m_pPrintDIB->m_pPrintDIBData[0], m_pPrintDIB->m_pPrintDisplayBMI, DIB_RGB_COLORS, SRCCOPY); BITMAPINFOHEADER struct: m_pPrintDisplayBMI->bmiHeader.biSize = (DWORD) sizeof(BITMAPINFOHEADER); m_pPrintDisplayBMI->bmiHeader.biWidth = width; // (1728) m_pPrintDisplayBMI->bmiHeader.biHeight = height; // (1) m_pPrintDisplayBMI->bmiHeader.biPlanes = 1; m_pPrintDisplayBMI->bmiHeader.biBitCount = 8; m_pPrintDisplayBMI->bmiHeader.biCompression = BI_RGB; m_pPrintDisplayBMI->bmiHeader.biSizeImage = 0; m_pPrintDisplayBMI->bmiHeader.biXPelsPerMeter = 8000; m_pPrintDisplayBMI->bmiHeader.biYPelsPerMeter = 8000; m_pPrintDisplayBMI->bmiHeader.biClrUsed = 256; m_pPrintDisplayBMI->bmiHeader.biClrImportant = 32; The .gpd file is a bit large to post. If you're interested, I'll e-mail it to you. Thanks in advance. Dave. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109101
  - 6
    - USB Serial. Windows wants to re-install for each new USB port connected What causes Windows to not recognise that it already knows about our device after the driver has been installed the first time. Why does it insist that it has 'found new hardware' when the lead is connected to a previously unused USB port? We are using the Windows usbser.sys driver for our usb/serial adaptor lead that plugs into our hardware with a propriatary plug (i.e. not a generic usb/serial lead - but, I don't think that's important). Thanks, Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109095
  - 7
    - bypass the disk filter driver I'm write a disk filter driver and I know there're some viruses or something that can bypass the disk filter driver.I wonder is there any way to avoid it. that is forbid the virus bypassing my filter driver. thanks! Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109079
  - 8
    - Failed to do IRP_MN_START_DEVICE (code:80000011) I try to make a sdio driver based on sdbus.sys. but When IRP_MN_START_DEVICE's IRP sent to a lower driver, it return error: STATUS_DEVICE_BUSY(code:80000011). Is that mean my hardware is busy? But it haven't do something yet. I run step by step, and found when sdbus.sys called KeWaitForMutexObject, It return error. Please help me, thank you! Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109076
  - 9
    - Stream device driver - how to make an application block on read? Hi, I am trying to implement a driver which provides a stream interface to applications which will do a WriteFile to send data and ReadFile to read data (with suitable initialization). The application cannot know when there is data to be read so it (a thread in it) blocks on a ReadFile till data is available, reads the data and then blocks again on the ReadFile. Given this execution model, how can I implement this behavior i.e. how can I cause the application thread to block on the ReadFile without having the applications do anything other than ReadFile? How can I in the driver then cause the thread to unblock when data is ready to be read? Or is this not possible and the application will need to do more than just ReadFile i.e. it will have to create an event and wait for it to be signalled, create a point to point message queue, etc? If so, I am concerned that the stream interface is not being modelled correctly (in which all an application does is ReadFile). Your input is highly appreciated. Thanks. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109069
  - 10
    - PCI command register gets zeroed out We have an intermittent problem where the PCIe config space command register is getting set to 0 after the system has booted and been running for awhile. Basically this disables memory access to the device, so PCI reads are returning 0xFFFFFFFF which looks to the device driver as if the device has been removed. All other config space registers look fine. The driver never attempts to access this register directly, as that is the function of the pci bus driver. It seems that the bus driver must be doing a config write of 0 to this register, but I haven't been able to capture this on an analyzer to prove this. This is not happening during any sort of power sequence. It is while the driver is activley reading / writing device memory. Under what conditions will pci.sys attempt to write a 0 to this register? Is there a way to determine if pci.sys is doing the write? Thanks, Michael Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109062
  - 11
    - SMBus Support in Windows XP In the Windows DDK there is mention of support for SMBus and references therein to Microsoft system drivers smbclass.sys and smbhc.sys. I can find no reference on the web or on any systems related to these drivers. Will they exist at some future time? Intel provides an SMBus device driver which they provide no documentation for coding on their website. Please correct me if wrong here. Have seen references to utilize the SMBus specification (1999) for API related information. Is the Intel driver supporting the SMBus specification? Would like to be able to detect and enumerate the devices attached to the SMBus as well as query information from them including battery information. Thank you, Ed R Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109052
  - 12
    - How to reduce latency of serial I/O Hello everyone, I have found that waiting for serial data to be returned from the kernel to my Win32 application takes a lot longer with overlapped I/O and WaitForSingleObject()/WaitForMultipleObjects() than when I constantly poll for the data. The difference can be greater than 80ms on my test system. Can someone explain why this is and what I can do to decrease the latency from when serial data is received by the kernel driver and returned to my application? Iâ??ve measured this problem on several different kinds of serial devices, e.g. integrated 8250/16550, USB<->232, Ethernet<->232, and the results are roughly the same so my guess is that the latency is caused by the kernel data marshalling rather than the serial driver. If this is the case and I canâ??t do anything to improve performance from user mode (other than polling) then would I benefit from moving time critical portions of my application into a driver? Would the same latency exist between my driver and the serial driver (both in kernel space) that currently exists between my Win32 application and the serial driver? Thanks! Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109048
  - 13
    - Failed to Open NDIS IM driver under Vista 32 Hi, I install NDIS 5.1 IM driver and try to open driver in Vist 32 bit. Following is code snipt hIoctl = CreateFileA( "\\\\.\\MyNetDriver", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL ); CreateFile gets failed and GetLastError returns 50 "The request is not supported". Code and Driver are working file under XP32 SP2. Please let me know what should I do for it? Thanks Anand Choubey Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109039
  - 14
    - idiots guide to driver debug messages Hi - I am developing a USB Video Class device from scratch, and am trying to get started understanding why usbvideo.sys fails to talk to my device. I am not a Windows device driver developer, but I've spent a fair amount of time searching and looked through several books, but have not found the answer to my question: What is the minimum setup required in order to receive debug messages (KdPrint / printf's) from the checked build of usbvideo.sys? I have installed the WinXP SP3a checked build operating system into a vmware machine, along with the WDK and the "Debugging Tools". I am able to use WinDbg to connect to the local kernel, and find the symbols etc. I am able to browse the symbols of anything I like, and modify anything I like. However I feel like I am missing something "basic" because I have yet to see any debug messages come into the WinDbg window. So I was wondering if there was an "idiots guide" somewhere, that showed step by step poking of appropriate symbols to get debug output from any driver, just so I can see something happen. Thank you for any pointers you can provide. John Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109030
  - 15
    - BSOD with DC2 Hi All, I'm testing a PCI memory card reader driver using dc2. I got a BSOD immediately after starting the random test. Moreover, the BSOD occured in windows XP. There was no BSOD in windows Vista. I had used XP build for Vista as well. I have two questions. 1. The last statement in dc2.log is Start IOCTL/FSCTL RANDOM Tests (100000 calls, rand funcs 0-400, rand devtype 0-200, rand buffers, seed=1220355778). Is there any way i can run only random tests. I had tried using the command "dc2 /dl 0 /du 200 /fl 0 /fu 400 /rs 1220355778 pcidrv" but there was no BSOD. 2. I did the bug check analysis, can any one point me the reason for failure? When i attached the debugger, the driver got IOCTL which i did not handle. The IOCTL's which are not handled are completed with status STATUS_INVALID_PARAMETER. Also, i did not have any assertions included at the point where the code failed. Thank You. Regards, Sushma Here is the bug check analysis: kd> !analyze -v ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* KERNEL_MODE_EXCEPTION_NOT_HANDLED (8e) This is a very common bugcheck. Usually the exception address pinpoints the driver/function that caused the problem. Always note this address as well as the link date of the driver/image that contains this address. Some common problems are exception code 0x80000003. This means a hard coded breakpoint or assertion was hit, but this system was booted /NODEBUG. This is not supposed to happen as developers should never have hardcoded breakpoints in retail code, but ... If this happens, make sure a debugger gets connected, and the system is booted /DEBUG. This will let us see why this breakpoint is happening. Arguments: Arg1: 80000003, The exception code that was not handled Arg2: 80526fbc, The address that the exception occurred at Arg3: aa39d804, Trap Frame Arg4: 00000000 Debugging Details: ------------------ EXCEPTION_CODE: (HRESULT) 0x80000003 (2147483651) - One or more arguments are invalid FAULTING_IP: nt!DbgBreakPoint+0 80526fbc cc int 3 TRAP_FRAME: aa39d804 -- (.trap 0xffffffffaa39d804) ErrCode = 00000000 eax=00000000 ebx=82c09ed8 ecx=00000001 edx=00000000 esi=8270d6e8 edi=aa123118 eip=80526fbd esp=aa39d878 ebp=aa39d89c iopl=0 nv up ei pl nz na po nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000202 nt!DbgBreakPoint+0x1: 80526fbd c3 ret Resetting default scope DEFAULT_BUCKET_ID: DRIVER_FAULT BUGCHECK_STR: 0x8E PROCESS_NAME: dc2.exe LAST_CONTROL_TRANSFER: from 804fcb3f to 804f8aef STACK_TEXT: aa39d3cc 804fcb3f 0000008e 80000003 80526fbc nt!KeBugCheckEx+0x1b aa39d794 8053d471 aa39d7b0 00000000 aa39d804 nt!KiDispatchException +0x3b1 aa39d7fc 8053db81 aa39d89c 80526fbd badb0d00 nt!CommonDispatchException +0x4d aa39d7fc 80526fbd aa39d89c 80526fbd badb0d00 nt!KiTrap03+0xad aa39d874 aa0e857c aa123118 8270d6e8 00000000 nt!DbgBreakPoint+0x1 aa39d89c aa0ea938 c0000002 00000001 82c09ed8 Wdf01000! FxRequest::CompleteInternal+0xd1 aa39d8b8 aa0ea95c c0000002 00000001 aa39d8e4 Wdf01000! FxRequest::Complete+0xb3 aa39d8c8 aa0d3fd4 c0000002 00000000 826f8a88 Wdf01000! FxRequest::CompleteWithInformation+0x18 aa39d8e4 aa1365ad 8270d6e8 7d8f2910 c0000002 Wdf01000! imp_WdfRequestCompleteWithInformation+0x7f aa39d8fc aa138f9f 7d8f2910 c0000002 00000000 pcidrv! WdfRequestCompleteWithInformation+0x1d [c:\winddk\6000\inc\wdf\kmdf \10\wdfrequest.h @ 848] aa39d9f8 aa0f9ba4 7d907570 7d8f2910 00000000 pcidrv! PCIEvtIoDeviceControl+0xf6f [d:\project\ioctl.c @ 752] aa39da1c aa0faf7c 7d907570 7d8f2910 00000000 Wdf01000! FxIoQueueIoDeviceControl::Invoke+0x30 aa39da4c aa0fd598 7d8f2910 8270d6e8 826f8a88 Wdf01000! FxIoQueue::DispatchRequestToDriver+0x445 aa39da68 aa0fed2c 826f8a00 aa124188 826f8a88 Wdf01000! FxIoQueue::DispatchEvents+0x485 aa39da84 aa0ffe67 00000000 82c1c4d8 82c2e3a0 Wdf01000! FxIoQueue::QueueRequest+0x237 aa39daa8 aa0eed9a 82c1c428 aa39db48 804edfe3 Wdf01000!FxPkgIo::Dispatch +0x377 aa39dab4 804edfe3 81fb7508 82c1c428 82c1c4fc Wdf01000! FxDevice::Dispatch+0x7f aa39dac4 f84b7c3a 00070050 82450958 82c1c428 nt!IopfCallDriver+0x31 aa39db48 f84a6402 824508a0 82c1c428 82c1c428 CLASSPNP! ClassDeviceControl+0x87e aa39dbdc f84b647f 824508a0 82c1c428 82c1c504 disk!DiskDeviceControl +0xdcc aa39dbf8 804edfe3 824508a0 82c1c428 82c1c428 CLASSPNP! ClassDeviceControlDispatch+0x48 aa39dc08 f86ff667 82b65230 82dafdd0 82c1c428 nt!IopfCallDriver+0x31 aa39dc34 804edfe3 826f7ad0 82c1c428 806d02d0 PartMgr!PmDeviceControl +0x8c aa39dc44 80573dce 82c1c4e0 82465ab0 82c1c428 nt!IopfCallDriver+0x31 aa39dc58 80574c5d 826f7ad0 82c1c428 82465ab0 nt! IopSynchronousServiceTail+0x60 aa39dd00 8056d5ba 00000794 00000000 00000000 nt!IopXxxControlFile +0x5e7 aa39dd34 8053ca28 00000794 00000000 00000000 nt!NtDeviceIoControlFile +0x2a aa39dd34 7c90eb94 00000794 00000000 00000000 nt!KiFastCallEntry+0xf8 0006ead8 7c90d8ef 0101209c 00000794 00000000 ntdll!KiFastSystemCallRet 0006eadc 0101209c 00000794 00000000 00000000 ntdll! ZwDeviceIoControlFile+0xc 0006eb98 01013868 0101b370 00272868 00000010 dc2!do_ioctl+0x8dc 0006f410 01014af8 000007a4 003005a0 0101b370 dc2!do_device_opens+0x468 0006f78c 01014809 000007ac 002f0088 0101b370 dc2!recurse+0x748 0006fb08 01009f42 00000000 0006ff44 0101b370 dc2!recurse+0x459 0006ff7c 0101876e 00000004 00273e28 00272c78 dc2!main+0x4d2 0006ffc0 7c816fd7 0000000e 00000000 7ffd4000 dc2!_initterm_e+0x163 0006fff0 00000000 010188ac 00000000 78746341 kernel32!BaseProcessStart +0x23 STACK_COMMAND: kb FOLLOWUP_IP: pcidrv!WdfRequestCompleteWithInformation+1d [c:\winddk\6000\inc\wdf \kmdf\10\wdfrequest.h @ 848] aa1365ad 5d pop ebp FAULTING_SOURCE_CODE: 844: IN ULONG_PTR Information 845: ) 846: { 847: ((PFN_WDFREQUESTCOMPLETEWITHINFORMATION) WdfFunctions[WdfRequestCompleteWithInformationTableIndex]) (WdfDriverGlobals, Request, Status, Information); > 848: } 849: 850: // 851: // WDF Function: WdfRequestGetParameters 852: // 853: typedef SYMBOL_STACK_INDEX: 9 SYMBOL_NAME: pcidrv!WdfRequestCompleteWithInformation+1d FOLLOWUP_NAME: MachineOwner MODULE_NAME: pcidrv IMAGE_NAME: pcidrv.sys DEBUG_FLR_IMAGE_TIMESTAMP: 48bd2306 FAILURE_BUCKET_ID: 0x8E_pcidrv!WdfRequestCompleteWithInformation+1d BUCKET_ID: 0x8E_pcidrv!WdfRequestCompleteWithInformation+1d Followup: MachineOwner --------- Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109027
  - 16
    - Upper Filter Drivers. Hi All, I am new to device drivers field. I am trying to build Upper filter driver for USB device. After installing I verified stack using device tree. I found my upper filter has created seperate stack just like PartMgr used to create. I am able to get all PNP related IRPs. But I am Unable to get other IRPs like IRP_MJ_INTERNAL_DEVICE_CONTROL or IRP_MJ_DEVICE_CONTROL in my upper filter driver. When I have made it lower filter driver then I am able to get all IRPs. As according to my understanding IRPs from IoManager should come to upper filter driver first and then to the functional driver and then to lower filter driver. Is there any special method to get all IRPs going to functional driver in upper filter driver. Thanks in Advance.. Eris Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109026
  - 17
    - WavePci DmaChannel problem for MSVAD. Hi, I am new to Device Drivers. I am trying to replace WavePci in place of WaveCyclic in MSVAD. I am understanding WavePci implementation from sample AC'97. But since it is a real hardware driver with use of DMA,register etc.. So how can I avoid these DMA related code. like 1. It requires AdapterObject. which is created by DmaChannel->GetAdapterObject(); and DmaChannel is created by Port-> NewMasterDmaChannel(); (see driver\wavepciminiport.cpp) 2. In RevokeMappings() implementation we need index of stBDList. (see driver\wavepcistream.cpp) // Get current index nCurrentIndex = Wave->AdapterCommon-> ReadBMControlRegister8 (m_ulBDAddr + X_CIV); I couldn't figure out from where this register gets value.i.e. who writes currentIndex on this register ? And If I want to do it without actual register how can I do it ? I also have question on device powerstate used in AC'97 sample. In PowerDevice2/3 case why MoveBDList is used ? Since I cannot add this implementation in my virtual driver will affect on functionality of the driver. Thanks in Advance. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109022
  - 18
    - NDIS driver not working in Vista.- Dropping UDP packets to port 3859 I have a wimax NDIS driver for a WiMax card, which works perfectly in Windows XP. I have a diagnostics application which listens to the UDP port 3859 and prints all the information received from this UDP packets in Win XP. But when i freshly install this driver and application in Windows vita the application does not show anything (looks like its not receiving any UDP packet). But the data path seems to be alright, that is once the WiMax card connects to the base station and then does some operations with the machines connected on the other side of the base station, this diagnostics application also starts receiving the UDP packets from the wimax card in the PC, and shows the information. What could be the issue ? I've not yet started debugging by putting the prints in the NDIS to see where the packets are getting dropped... before that thought of posting this for an expert advice... Regards Esha Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109021
  - 19
    - USB RNDIS Device Speed Hi, I have a USB RNDIS network device, which when connected to windows machine shows a network connection. The windows RNDIS driver queries OID_GEN_LINK_SPEED from device, what speed shall device return? I am asking this question because:- My device is a high speed device which means link speed is 480 Mbps. But since my device implements BULK endpoint, the bandwidth allocated to it will be 10% i.e Maximum 48 Mbps. Now If I say the speed is 480 Mbps what will windows use it for? Will the data transfers from window happen at speed of 480 Mbps or this OID property is just to show the link speed in network connection status window. If windows use this value to do the know the data transfer rate the performance will be hit because due to bulk endpoint Controller will never allow more that 48 Mbps data transfer. Can somebody help? Navneet Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109019
  - 20
    - Mini printer driver for non PCL printers ? Is It possible to write a mini printer driver based on Microsoft universal printer driver , for a printer that does not use PCL. My exact question is will GPD parser allows non PCL commands ? thanks, Jithesh Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109016
  - 21
    - Discussion forum for Universal Printer Driver Hi all, Is there any discussion forum available for universal printer driver ? thanks, Jithesh Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109014
  - 22
    - SetupDiEnumDeviceInterfaces - DIGCF_ALLCLASSES not returning USB A With C# - VS2008 Pro - Trying to access access USB Audio Device (Alesis Midi Trigger I/O) for read only purposes... XP SP2 Device Manager shows device under "Sound, video and game controllers" as "USB Audio Device" working properly. I'm not finding this device when calling SetupDiGetClassDevs & SetupDiEnumDeviceInterfaces. I tried to pass null for ClassGuid param of SetupDiGetClassDevs as Windows Driver Kit docs suggest. Also tried Windows Driver Kit doc example - SetupDiGetClassDevs(NULL, NULL, NULL, DIGCF_ALLCLASSES | DIGCF_PRESENT). Also tried an unconfirmed ClassGuid value I found defined on web as USB Raw Device class guid {a5dcbf10-6530-11d2-901f-00c04fb951ed} No success on any attempt. No errors. No devices returned on subsequent SetupDiEnumDeviceInterfaces call. Is there another way I can access this device, for read only purposes, using the Device Instance ID listed by Device Manager? As a sanity check, I was able to use the guid returned by HidD_GetHidGuid of hid.dll.... SetupDiGetClassDevs & SetupDiEnumDeviceInterfaces seems to successfully return info on usb HID devices only. I don't think Sound, video and game controllers are HID. Any input is greatly appreciated. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109009
  - 23
    - PreInstaller with DPInst Fails Respected Sir/Madam I am working preinstalled to be worked on WindowsXP and for Window 2003. I am using DPInst.exe for preinstallation purpose/ I created test certicate as per procedure Kernel-Mode Code Signing Walkthrough document. Used this test certificate to Sign the drivers. And test preinstall it and it worked fine on test enviournment. After plugging PNP device it get automatically detected and driver get installed fine. We go ahead and purchased a Authenticode Certificates. Then using those Autheticode Certificates I sign our drivers and test it. I found that same drivers does not work. After installation when I plug device it shows Found New Hardware. I am working lot to solve this issue but still not able to success. It would be great if someone can help me. Here is a part of Setupapi.log file where it is failing with signed with Autheticode Certificates ========================================= #V286 Verification using alternate platform (Platform = 2, High Version = 5.1, Low Version = 5.0). #I329 Verifying catalog "C:\WINDOWS\system32DRVSTORE \pwsrlpnp_6CE79D5D5A35ECC4CFB6856DAC4DF4F008E3A43C \wd900.cat" failed. Error 0x800b0110: The certificate is not valid for the requested usage. #E367 An unsigned or incorrectly signed file "C:\WINDOWS \system32\DRVSTORE\pwsrlpnp_6CE79D5D5A35ECC4CFB6856DAC4DF4F008E3A43C \wd900.cat" for will be installed (Policy=Warn, user said ok). Error 0x800b0110: The certificate is not valid for the requested usage. ========================================= At same point see what Setupapi.log file if dricer is signed with Autheticode Certificates ========================================= #V286 Verification using alternate platform (Platform = 2, High Version = 5.1, Low Version = 5.0). #V132 File "C:\WINDOWS\system32\DRVSTORE \pwdusb_520A94A16EBA7325FC89DAA55A38F5F41A492D4C\pwdusb.inf" (key "pwdusb.inf") is signed in catalog "C:\WINDOWS\system32\DRVSTORE \pwdusb_520A94A16EBA7325FC89DAA55A38F5F41A492D4C\wd900.cat". ========================================= Thanks and Regards, Prashant Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 109001
  - 24
    - what the order when AddDevice in a filter driver what the order when AddDevice in a filter driver is the 1st disk added by AddDevice pointed to by the symbol link \\\\.\\PhysicalDrive0 and the 2ed pointed to by \\\\.\\PhysicalDrive1 etc ? does it always happens? Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108993
  - 25
    - ERROR_NOACCESS when writefile to \\\\.\\PhysicalDrive0 I wanna write data to the 1st secotr of the disk so I use createfile to open the first disk \\\\.\\PhysicalDrive0 and then use writefile write some data to the 1st sector of the disk I get error ERROR_NOACCESS what's the reason and how to resolve it Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108992
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  - 1
    - Are 2 PDOs in a hid minidriver possible? Hello. I am newbie in windows driver. There can be 2 PDOs in a HID minidriver? As far as I know, multiple PDOs means multiple interfaces but I have not seen interface descriptors while I am working on hid minidriver. Please answer. Thanks. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108984
  - 2
    - IOCTL access to the HIDCLASS Hi, On MSDN, I found a desciription that HidD_GetAttributes and HidD_GetPreparsedData API will generate IOCTL for HIDCLASS. Here, we can get the USB HID products VID/PID information also by calling the SetupDiGetDeviceRegistryProperty API, not calling the HidD_GetAttributes. They also calls IOCTL for HIDCLASS or other drivers ? I would like to know following code will generates IOCTL to HIDCLASS. hDevInfo = SetupDiGetClassDevs( &guid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE ); // 1) if ( INVALID_HANDLE_VALUE == hDevInfo ) { return FALSE; } for ( Loop = 0; ; Loop++ ){ devinfo.cbSize = sizeof( SP_DEVINFO_DATA ); devinfo.ClassGuid = guid ; if ( !SetupDiEnumDeviceInfo( hDevInfo, Loop, &devinfo ) ){ SetupDiDestroyDeviceInfoList(hDevInfo); break; } if ( !SetupDiGetDeviceRegistryProperty( hDevInfo, &devinfo, SPDRP_HARDWAREID, &dwType, byBuffer, sizeof(byBuffer), &dwSize )){ break; } } SetupDiDestroyDeviceInfoList(hDevInfo); Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108960
  - 3
    - Exposing multiple logical devs per physical dev to ATAPORT I need to present a single physical device as two logical devices (one non-disk ATAPI dev and one ATA disk dev) to VISTA ataport.sys I plan on faking 2 devs on a single channel (not going to expose 2 virtual "channels" w/ 1 dev on each since they will actually map to a single underlying set of hw resources that requires synchronized access but Ataport has no provision for inter-channel synchronization) My controller has a proprietary interface. I plan on reporting it as Native Mode ATA controller since I can't have 2 devs on a single port (ie "channel") on a SATA controller w/out Port Multiplier (don't want to have tofake port multiplier!). My controller I/F supports overlapped cmds (between devs) and queued cmds (multiple concurrent cmds per dev). Questions: 1) If I set NumberOfOverlappedRequests in the IDE_CHANNEL_CONFIGURATION_STRUCTURE to MAX_REQS, will ATAPORT send me up to MAX_REQS concurrent reqs to do with what I want or do I also need to set NumberofOverlappedRequests (in the IDE_DEVICE_STRUCTURE) on a per dev basis? 2) How is fairness between the 2 reported devs managed? I'm guessing Ataport will send a given IRB to the miniport as long as a) the MAX per-channel threshold has not been reached and b) the MAX per- device (for the dev the IRB is addressed to) has not been reached. If so, seems it's the miniport's responsibility to manage fairness/ avoid dev starvation by either a) evenly dividing the total actual queue depth of the physical dev between the 2 logical devs in the per- dev NumberOfOverlappedRequests reported values...or by using AtaPortDeviceBusy/AtaPortDeviceReady judiciously to allow the under- serviced device to receive some IRBS if they are available. Is this a reasonable conclusion? 3) Do I also need to report support for ATA Overlap Feature Set and Queued Feature Set (not to be confused w/SATA NCQ) on the fake ATA dev to convince ATAPORT? Little support for ATA legacy cmd queuing in industry I think so not sure if ATAPORT would care about this ... 4). Will ATAPORT make any adverse assumptions about my HW capabilities because it isn't SATA (and thus doesn't support various SATA advanced features) in performance/power management/PnP/etc area(s)? I know this is a vague question but my concern here is whether there may be any unfavorable caveats related to how ATAPORT behaves w/respect to (P) ATA vs SATA above and beyond whatever is strictly required by underlying technical differences. 5) If I return "type unknown" (0x1f) in SCSI inquiry data on behalf of fake non-disk dev, will ATAPORT be willing to create a PDO on behalf of that peripheral device type as long as the peripheral qualifier is 0 (ie, indicates "A peripheral device having the specified peripheral device type is connected to this logical unit.")? 6) this issue is unrelated to multiple logical devs per physical dev: I need to propogation some private data on a per IO request basis down to the miniport for the non-disk dev. To accomplish this, I thought I would report support for 16 byte command packets (in Atapi Identify Packet Device data) and then just use some of those bytes for my private data instead of an actual "CDB". Is it safe to assume ATAPORT will not try to interpret the CDB and will just copy the 16 bytes into IRB and send me an IRB_FUNCTION_ATAPI? If any of the issues above are blockers, maybe I need to switch to STORPORT model (faking logical devs is common & decoupled from transport/capability issues). Already have the ATAPORT miniport written so would like to avoid this if possible... thanks in advance for any help/info Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108958
  - 4
    - Question on staticDV Hi all When I run staticDV /scan on my WDM driver (written in C), which compiles fine under the 6001 ddk I get this error: SDV could not determine the driver type. I tried both role based scanning and declaring the functions using role types but get the same error. The driver is a serial to usb driver by the way. Many thanks for any advice. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108949
  - 5
    - How to generate an interrupt to the PC Hi all i developed a usb2ser.sys on windows platform (kmdf) which will show USb port as a COM port to the PC and can work with serial port application in PC. now i got into the trouble about Read opreation with some applications. why i mentioned "some" becz my driver is perfectly works with the app if it is implemented in the way that Readfile win32 api is calling in a thread n it gets the data if device sends.. but some application are in diffway that when ever readbuffer is full then device drver can configure the devicecotroll er to geneate a siganl to the CPU called an interrupt request...application watch this n calls read operation..if it's the case i was failuring about read operation.. am i right about what i explained cause of failure about read operation? can any one tell me how to give an interrupt to the PC from driver when i need.. how can i show to the application there is an interrupt if it checks.. if any tell me code abouthis in KMDf it would be appreciated Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108948
  - 6
    - Need help in building MSVAD for WavePci Hi, I am new to windows device drivers. I want to build MSVAD for wave pci by replacing wavecyclic. Do you have samples or docs which will help me to go ahead ? Thanks in advance. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108942
  - 7
    - Vista does not allow second install of signed driver Our product install works fine on Vista Enterprise the first time we install it. But when we uninstall then reinstall it fails with the messages: dvi: Enumerating INFs from path list 'C:\Windows\INF' inf: Searched 9 potential matches in published INF directory sig: {_VERIFY_FILE_SIGNATURE} 14:44:13.953 sig: Key = smartworks2k.inf sig: FilePath = C:\Windows\INF\smartworks2k.inf sig: Catalog = C:\Windows\INF\SmartWORKS2k.cat ! sig: Verifying file against specific (valid) catalog failed! (0x00000057) ! sig: Error 87: The parameter is incorrect. This occurs on brand new installs of Vista and on older installs. Additionally, when we re-create the installation package and get new .inf and .cat files, the installation works great the 1st time, and fails the second. -- Mr. Fixit needs your help! - John Bond , LLC Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108931
  - 8
    - What IRQL is PsSetLoadImageNotifyRoutine's Notify Routine called a I am using the PsSetLoadImageNotifyRoutine to get notifications of exe file loads. In the documentatoin I see what IRQL PsSetLoadImageNotifyRoutine and PsRemoveLoadImageNotifyRoutine can be called at but not what IRQL(s) the my notify routing callback may be called at. The similarly structure notification routines for Process and Thread notification are documented as being called at PASSIVE_LEVEL. The documentation of the image load notification however does not specify the valid calling IRQLs. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108928
  - 9
    - Not woking Driver Code Signing authenticode but working fine Test Hello All, I am working on making unattended Silent preinstall(Software First) of driver using DPInstall. Drivers to be installed XP Professional. As mentioned by microsoft I signed Drivers with test certificates. On test machine I installed that test certificates in Trusted Root and Tusted Publisher. And my driver preinstall works and drivers go to driver store. Later when I attach device drivers get automatically installed. After that we purchase Code Signing certificates from GlobalSign and I then Sign the working drivers with authenticode certificates. Add certificates in trusted root and trusted publisher. And what I found divers does not get preinstall properly. Drivers go to driverstore properly but when I attach device it shows found new hardware dialog box. When I look Setupapi.log it gives error something like this is not a valid certificate(not exactly remember). But after that it does not create cat file and also pnf file. Please help me to figure out why driver is working with test certificates and not properly signed certificates. Thanks in advance Prashant Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108925
  - 10
    - Shadow Volume Copy Service (VolSnap) hangs with miniport virtual Hi All, I am developing a SCSI miniport virtual disk driver. Somehow, the system hangs with Shadow Volume Copy Service when a virtual disk drive (1G disk size) is present. It works fine if the disk capacity is smaller, e.g., 100M. I tried to debug, it seems a few write operation (SCSIOP_WRITE) is coming to the driver when Shadow Volume Copy Service is used. Any ideas? Thanks, Huihong Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108923
  - 11
    - SQLite in user mode application of minispy sample? Hi, I am trying to modify the minispy sample from the latest WDK to log file operations to the file database SQLite (sqlite.org) instead of to a simple file. The sources (.h and .c) as well as a compiled version (dll) of sqlite are available. Now I did the following: I created a lib to implicitly load the sqlite dll-library in the user mode application. I added some sample code in the user mode application. The sample works in a standard Win32 console application. I added the sqlite lib file to the file sources of the user mode application (TARGETLIBS) and also updated the include path. My build environment is: Windows Vista and Windows Server Longhorn x86 Free Build Environment Compilation works fine but during link the used functions from the sqlite library remain unresolved. I tried to change the path to the library to include target architecture (i386) but I had little success. I cannot see any useful error messages, even when running the generated nmake command line in verbose mode. What am I doing wrong? Is it at all possible to use sqlite as is in the user mode application? If it is possible, what is the correct way of doing it? What are the requirements for using such dlls? Kind regards, Bjorn Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108896
  - 12
    - How do I uninstall older USB PnP drivers before installing new one Hello. Our company makes a series of USB-based measurement devices that we talk to via a WDM USB driver we wrote (and logo certified) several years ago. We are in the process of changing over to using WinUSB.sys as our USB access method. When we install the WinUSB.sys access method (via an .inf file) , we would also like to uninstall our old driver's oem*.inf file and .../enum/USB registry entries. My present technique is to: 1) Walk through all of the oem*.inf files and find the one that belongs to us (by looking for our .cat file name in the .inf file). 2) Remove it via the SetupUninstallOEMInf( ) call. 3) Install our new driver via the SetupCopyOEMInf( ) call. While this seems to take care of the .inf and .cat files, it doesn't remove the associated HKLM\SYSTEM\CurrentControlSet\Enum\USB items. This prevents the new driver from being loaded when our device is plugged in. My questions are: Am I doing this the correct way? What is the 'official' method of getting rid of the associated registry entries? Can I just delete them directly using the Win32 Registry API, or will there be security issues? Can I count on the Windows oem*.inf always being named <windows path>\inf\oem*.inf, regardless of the system locale? Thank you Scott Wild Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108879
  - 13
    - Enumerating empty/unpopulated PCI slots Greetings, I would like to be able to enumerate empty PCI slots present in the system. I am able to enumerate system devices using Configuration Manager and SetupDiXXX functions. I am trying to figure out how to find if a PCI slot is empty or unpopulated, ie, no card is plugged in. In attempt to understand, I checked in Device Manager with different views such as devices by connection, by resource, etc., and looked in the registry to see if I could tell if Windows somehow keeps record/ indication of unpopulated PCI slots. I couldn't find out. Windows is 2003 Server. Need some pointers on how to accomplish this. Thanks. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108875
  - 14
    - AVStream Filter Friendly Name If there are multiple devices in a system (KSDEVICE), and each device registers a filter factory with the same KSFILTER_DESCRIPTOR, then there is no way to distinguish a filter on one device from another with the friendly name. It is possible to work around this problem by using a different ReferenceGuid in the KSFILTER_DESCRIPTOR on each device. This is not a good solution, because it is not scalable, as it requires entries in the .inf file for all possible devices in a system. Is there a way to assign a unique friendly name to each filter factory without using the .inf? Thanks for your suggestions. Harry Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108872
  - 15
    - Use of MmMapIOSpace in 64-bit Hi, Is there any special concern when using MmMapIOSpace function in a 64-bit driver once my device ony support 32-bits? Will this function return a 64-bit virtual address? Thanks in advance. Douglas Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108871
  - 16
    - Newbie to VC++ and DDK question--developing an IFS Hello, I am developing a minifilter for filesystem. Also, my filter works fine when I remove the function below but when I enable it, I get an BSOD. Can you guys see what's wrong here? Or am I missing something??! BOOLEAN ScannerpCheckParentDir ( __in PUNICODE_STRING ParentDir ) /*++ Routine Description: Checks if this file's parent dir is something we are interested in Arguments ParentDir - Pointer to the file parent dir Return Value TRUE - Yes we are interested FALSE - No --*/ { const UNICODE_STRING *path; UNICODE_STRING BufferString; if (ParentDir->Length == 0) { return FALSE; } // // Check if it matches any one of our static extension list // path = ScannerPathsToScan; while (path->Buffer != NULL) { if (ParentDir->Length >= path->Length) { RtlUnicodeStringCbCopyStringN( &BufferString, ParentDir, path->Length ); if (RtlCompareUnicodeString( &BufferString, path, TRUE ) == 0) { // // A match. We are interested in this file // return TRUE; } } path++; } return FALSE; } Best Regards, SZ Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108858
  - 17
    - What's different from XP and Vista System flow? I have one WDM driver for XP and it works well on XP. I use WDK6000 to build and put it on Vista and Vista SP1. But some functions can't work well. Like, When Hibernate, on XP, the flow is "Device Close" -> "SET_POWER" -> Power off ( messages show ) , but on Vista, the step: "Device Close" doesn't happen.(not message dumps) Do I miss any informations about Vista? How to fix my question? Thanks for your kindly suggestion. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108849
  - 18
    - USB device detection via query registry information Besides using the WM_DEVICECHANGE to detect a USB device insert/remove, I tried to use scan registry information ""HARDWARE\\DEVICEMAP\\SERIALCOMM" to check, and using CreateFile() to open USB com port right after I find a new-coming device. So far, the method works fine in single-core PC while in dual-core PC, I found that if I invoke CreateFile() right after I find the device from registry, the operation will return error code 2 (implying that "The system cannot find the file specified."). If I delay to invoke CreateFile() by sleep(1), for example, the error will not occur again. Thus, I am wondering how the initialization process of underlying driver actually work. Is registry update operation finished before the the device driver is ready? Thanks! Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108847
  - 19
    - how to use NtCreateFile in a user mode application I include <ntifs.h> and when compiling got the following problem 1>c:\winddk\6000\inc\api\ntdef.h(1164) : error C2061: syntax error : identifier 'MaximumLength' 1>c:\winddk\6000\inc\api\ntdef.h(1164) : error C3646: 'PCHAR' : unknown override specifier 1>c:\winddk\6000\inc\api\ntdef.h(1164) : error C3646: 'Buffer' : unknown override specifier 1>c:\winddk\6000\inc\api\ntdef.h(1164) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>c:\winddk\6000\inc\api\ntdef.h(1164) : warning C4183: '__field_bcount_part_opt': missing return type; assumed to be a member function returning 'int' 1>c:\winddk\6000\inc\api\ntdef.h(1200) : error C2061: syntax error : identifier 'MaximumLength' 1>c:\winddk\6000\inc\api\ntdef.h(1200) : error C3646: 'PWCH' : unknown override specifier 1>c:\winddk\6000\inc\api\ntdef.h(1200) : error C3646: 'Buffer' : unknown override specifier 1>c:\winddk\6000\inc\api\ntdef.h(1200) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>c:\winddk\6000\inc\api\ntdef.h(1200) : warning C4183: '__field_bcount_part': missing return type; assumed to be a member function returning 'int' 1>c:\winddk\6000\inc\ddk\wdm.h(2811) : error C2371: 'NTDDK::PSECURITY_QUALITY_OF_SERVICE' : redefinition; different basic types 1> c:\winddk\6000\inc\ddk\wdm.h(86) : see declaration of 'NTDDK::PSECURITY_QUALITY_OF_SERVICE' 1>c:\winddk\6000\inc\ddk\wdm.h(7037) : error C2039: 'Buffer' : is not a member of 'NTDDK::_UNICODE_STRING' 1> c:\winddk\6000\inc\api\ntdef.h(1194) : see declaration of 'NTDDK::_UNICODE_STRING' 1>c:\winddk\6000\inc\ddk\wdm.h(7050) : error C2039: 'Buffer' : is not a member of 'NTDDK::_STRING' 1> c:\winddk\6000\inc\api\ntdef.h(1158) : see declaration of 'NTDDK::_STRING' 1>c:\winddk\6000\inc\api\ktmtypes.h(189) : error C2059: syntax error : 'constant' ................................................... who can tell me why ? how to use NtCreateFile in a user mode application Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108836
  - 20
    - STATUS_ACCESS_VIOLATION when NtCreateFile in a driver When I use NtCreateFile in a driver to create a file in c:\ I got error and status is STATUS_ACCESS_VIOLATION I used the filename \\dosdevices\\C:\\test.txt what's the reason and how to resolve the problem thanks a lot Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108835
  - 21
    - help about "COM" can any one tell me how to delete unused COM numbers from comdatabase..i need to do this .. thanks in advanmce Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108834
  - 22
    - Question on DPC routine without complete in XP embedded Hello. I am working on keypad driver which is modified from vhidmini driver supplied by DDK.(XP embedded) I am running DPC routine and I made the routine complete only when valid key input presents. When DPC routine always complete, there was no problem, but when I made it complete only when valid key input is present, my device does not shutdown. I didn't call IoCompleteRequest() and just set timer when I don't complete. I am newbie in XP driver programming and please help me solve this problem. Thanks. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108831
  - 23
    - virtual miniport help. Hi, I'm trying to install MUX driver with 2 NICs and 1 virtual miniport in a Vista machine. My problem is when I first install the driver, the virtual miniport show up on the network connection. However, when I reboot the node the virtual miniport go away. Why is this behave this way? Is that because of my binding in the driver incorrect? can someone point me to the right direction? Also, I notice that my RegistryPath is always set at Currentcontrolset001 is this incorrect too? thanks in adv, Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108828
  - 24
    - Logging of console output in DTM Hi All, I am a newbie to DTM. But i have managed to have the DTM setup with a couple of tests running. My concern was, does DTM have the feature of logging the standard output, i.e the standard output that is sent to the console. Can you please advice me, on how to capture it. Thanks, Satesh Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108823
  - 25
    - VisualStudioDeployment-driverInstallation-ArchitectureDifferentiat Hi, I am using Visual studio deployment project for installing my driver using DIFx DPInST tools, as part of this, my package should support multiple OS along with X86 & AMD64 platforms. I really dont want to provide two different msi files to the user for different platforms, instead, I am using x86 platform selection and while deploying the all necessary files(sys, dll, inf & other) using Condition statments. I also aware that, for 64 bit platform, files will be installed in programFiles(x86). Question: I have used the processorArchitecture property to detect the platform, x86 or AMD64, but i have observed that, this condition is not working properly and few files of x86 will be installed in AMD64 platform and some files of AMD64 will be installed on x86 platform. I have double checked that, condition is used correctly for files as ProcessorArchitecture = X86 ProcessorArchitecture = AMD64 To fix this, instead of using processorArchitecture property i am using versionNT & versionNT64. Since many OSes are supported, conditions are becoming very lengthy. And also for detecting VistaX86, i should give below. versionNT = 600 And VersionNT64 <> 600 , if i just use versionNT only, again it is a problem that, in 64 systems, x86 files are copied. But i really didnt like this, when processorArchitecture is used, while copying DPINST for x86 platform, instead of this, AMD64 DPINST was copied. Is there any other property available to detect the architecture or any other method available to detect the host configuration? My requirment is one MSI file shouls support all platforms & configurations to install my driver & appplication. Thanks, Kota. Tag: How to use DeviceIoControl() to control CF on USB CF Reader? Tag: 108821

I am trying to use Win32 DeviceIoControl() API to send ATA command,
like WRITE BUFFER command, to control CF card on USB CF Reader.
I use CreateFile() to open device handle, like
CreateFile(_T("PhysicalDrive4"), ...).It success and return device handle.
I don't know how to send standard ATA command in Win32 API.
Are there any sample code or someone can help me.
Thanks a lot!
--
Regards,
Goldbach

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