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D:\  ->  \\.\PHYSICALDRIVE0 or 1 ?

Posted on 1999-07-22
Medium Priority
Last Modified: 2013-12-03
I need to know how I can get the physical drive number (winNT) that belongs to a specified logical volume drive.


Does "D:\" belong to "\\.\PHYSICALDRIVE0" or to "\\.\PHYSICALDRIVE1"?

There must be an API somewhere.

Thanx for your help!!
Question by:drdt3
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Expert Comment

ID: 1403497
look in the registry

Expert Comment

ID: 1403498
Try DeviceIoControl functions IOCTL_DISK_GET_DRIVE_GEOMETRY,

LVL 23

Expert Comment

ID: 1403499
Look at this URL....

The implementation of DeviceIoControl to get the physical drive number is in SystemHDisk project of the source code..
The file name is HDiskInformation.cpp.
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LVL 86

Accepted Solution

jkr earned 440 total points
ID: 1403500
Take a look at '' - this should give you the relevant information along with some source code...

Author Comment

ID: 1403501
Hi jkr!
Thank you. But what is with NT5 (NT2000)? Sysinternals tells there is nothing the same.

LVL 86

Expert Comment

ID: 1403502
Hmm, sysinternals tells that the registry key is kept for backward compatibility, only the fault tolerance information is stored on the medium directly. From my experience with MS OSs, these 'backward compatibility' issues are kept quite a while (IMHO until Win2005 ;-)

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