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GeneralRe: LNK errors while using an "extern "C"" function Pin
Cedric Moonen10-Aug-09 20:15
Cedric Moonen10-Aug-09 20:15 
QuestionReturn value from a funtion Pin
AkashAg10-Aug-09 18:06
AkashAg10-Aug-09 18:06 
AnswerRe: Return value from a funtion Pin
«_Superman_»10-Aug-09 18:41
professional«_Superman_»10-Aug-09 18:41 
GeneralRe: Return value from a funtion Pin
AkashAg10-Aug-09 18:46
AkashAg10-Aug-09 18:46 
GeneralRe: Return value from a funtion Pin
«_Superman_»10-Aug-09 18:47
professional«_Superman_»10-Aug-09 18:47 
AnswerRe: Return value from a funtion Pin
Stuart Dootson10-Aug-09 21:22
professionalStuart Dootson10-Aug-09 21:22 
QuestionTranslate Logical Drive to Physical Drive Pin
Bram van Kampen10-Aug-09 14:55
Bram van Kampen10-Aug-09 14:55 
AnswerRe: Translate Logical Drive to Physical Drive Pin
Randor 10-Aug-09 17:45
professional Randor 10-Aug-09 17:45 
You could use the IOCTL_STORAGE_GET_DEVICE_NUMBER[^] control code to obtain the physical drive and volume number.

For example:

#include <Winioctl.h>
VOID LogicalToPhysical(TCHAR *szDrive)
{
	CString szPhysical;
	HANDLE h = CreateFile(szDrive, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,OPEN_EXISTING,0,NULL);
	if(INVALID_HANDLE_VALUE != h)
	{
		STORAGE_DEVICE_NUMBER sd;
		DWORD dwRet;
		if(DeviceIoControl(h, IOCTL_STORAGE_GET_DEVICE_NUMBER, NULL, 0, &sd, sizeof(STORAGE_DEVICE_NUMBER), &dwRet, NULL))
		{
			szPhysical.Format(_T("\\\\.\\PhysicalDrive%d"), sd.DeviceNumber);
		}
		CloseHandle(h);
	}
}

//Usage:
LogicalToPhysical(_T("\\\\.\\\\C:"));


Note that this control code will fail to return correct information for mirrored and striped volumes. A more complete solution for these types of drives would be the IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS[^] control code which will return an array of partitions for the drive.

Best Wishes,
-David Delaune
GeneralRe: Translate Logical Drive to Physical Drive [modified] Pin
Bram van Kampen11-Aug-09 11:09
Bram van Kampen11-Aug-09 11:09 
GeneralRe: Translate Logical Drive to Physical Drive Pin
Randor 11-Aug-09 13:06
professional Randor 11-Aug-09 13:06 
GeneralRe: Translate Logical Drive to Physical Drive Pin
Bram van Kampen12-Aug-09 8:31
Bram van Kampen12-Aug-09 8:31 
GeneralRe: Translate Logical Drive to Physical Drive Pin
Andy Belton24-Dec-11 21:37
Andy Belton24-Dec-11 21:37 
GeneralRe: Translate Logical Drive to Physical Drive Pin
Randor 26-Dec-11 11:13
professional Randor 26-Dec-11 11:13 
GeneralRe: Translate Logical Drive to Physical Drive Pin
Andy Belton1-Jan-12 1:40
Andy Belton1-Jan-12 1:40 
GeneralRe: Translate Logical Drive to Physical Drive Pin
Randor 1-Jan-12 2:54
professional Randor 1-Jan-12 2:54 
GeneralRe: Translate Logical Drive to Physical Drive Pin
Andy Belton4-Jun-12 4:34
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QuestionIostream processing\flags question Pin
GuimaSun10-Aug-09 12:23
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GeneralRe: Iostream processing\flags question Pin
GuimaSun11-Aug-09 2:55
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QuestionWait Until Event Occurs Pin
staticv10-Aug-09 4:50
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AnswerRe: Wait Until Event Occurs Pin
Stuart Dootson10-Aug-09 8:32
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GeneralRe: Wait Until Event Occurs Pin
staticv10-Aug-09 20:30
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GeneralRe: Wait Until Event Occurs Pin
Stuart Dootson10-Aug-09 21:01
professionalStuart Dootson10-Aug-09 21:01 
GeneralRe: Wait Until Event Occurs Pin
staticv10-Aug-09 21:25
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QuestionSHGetFolderPath returns E_FAIL for CSIDL_BITBUCKET Pin
Nitheesh George10-Aug-09 4:43
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