Cannot get OpenVirtualDisk working

Question

I just installed Windows 7 SDK and am trying to get OpenVirtualDisk working with ISO files (I can get it working with VHDs). Here is the code: 

	VIRTUAL_STORAGE_TYPE vstorType = {

		VIRTUAL_STORAGE_TYPE_DEVICE_ISO

		//VIRTUAL_STORAGE_TYPE_DEVICE_VHD

		, {0xec984aec, 0xa0f9, 0x47e9, 0x90, 0x1f, 0x71, 0x41, 0x5a, 0x66, 0x34, 0x5b}}; //VIRTUAL_STORAGE_TYPE_VENDOR_MICROSOFT;

	OPEN_VIRTUAL_DISK_PARAMETERS openParams = {

		OPEN_VIRTUAL_DISK_VERSION_1

		//OPEN_VIRTUAL_DISK_VERSION_UNSPECIFIED

		, {0}};

	HANDLE h = 0;



	DWORD dw = OpenVirtualDisk(&vstorType, _T("c:\\temp\\test.iso"),

		//VIRTUAL_DISK_ACCESS_ATTACH_RO, 

		VIRTUAL_DISK_ACCESS_READ,

		OPEN_VIRTUAL_DISK_FLAG_NONE, &openParams, &h);

	if(dw)

	{

		LastError err(dw);

		_putts(err);

	}

	else

	{

		ATTACH_VIRTUAL_DISK_PARAMETERS attachParams = {ATTACH_VIRTUAL_DISK_VERSION_1, 0};

		dw = AttachVirtualDisk(h, 0, ATTACH_VIRTUAL_DISK_FLAG_READ_ONLY, 0, &attachParams, 0);

		if(dw)

		{

			LastError err(dw);

			_putts(err);

		}

		else

		{

			DetachVirtualDisk(h, DETACH_VIRTUAL_DISK_FLAG_NONE, 0);

			CloseHandle(h);

		}

	}

The problems are:

0. According to the SDK docs, I should include <windows.h> as usual. But it turned out Windows.h does not have virtdisk.h. But this problem is easy to correct.

Minimum supported client	Windows 7
Minimum supported server	Windows Server 2008 R2
Header	Virtdisk.h (include Windows.h)
Library	Virtdisk.lib
DLL	Virtdisk.dll

1. Linker cannot find VIRTUAL_STORAGE_TYPE_VENDOR_MICROSOFT, so I have to copy/paste from virtdisk.h.
2. OpenVirtualDisk returns 0xc03a0014 - A virtual disk support provider for the specified file was not found.

What am I doing wrong?

 

Answer 1

Quoting from this article:

Keep in mind that the API is designed to allow Microsoft to add support for additional formats in the future. In fact, support for the ISO optical disk image format has been considered but has not been added as of the Windows 7 beta. I hope that the necessary virtual disk support provider will be included in the release build. This would allow users to attach and mount ISO images as read-only hard drives.

Pretty sure that didn't happen, no sign of it in Ultimate.  I wish it did.

---

Hans Passant.

Answer 2

gift_of_seasons,

I just ran into the same problem with SDK7.0 posted on 8/24/09.
Did you figure this out? Do you know any solution?

Thanks
KB.

Answer 3

<Sorry, I unintentionally proposed bodak's post as an answer, please disregard that>

Bodak, if you are trying to use the VIRTUAL_STORAGE_TYPE_DEVICE_ISO value as gift_of_seasons was, note the answer from nobugz. Supporting document is as follows:

http://msdn.microsoft.com/en-us/library/dd323704(VS.85).aspx

If you are not using this unsupported value but are still having problems building, you may need to define WINVER as _WIN32_WINNT_WIN7. 

For more information on using header files to target various versions of Windows, see Using Windows Headers at the following location:

http://msdn.microsoft.com/en-us/library/aa383745(VS.85).aspx

Thank you,
-Mark Amos