Changing drive letter even though getting "The parameter is incorrect"

When I am try to change drive letter in Windows 7, I am getting error message:

The parameter is incorrect.

I know there are another tools to change drives letter. But I don't like to install a program for this simple reason. So I am searched and found a way by regedit.

The following example change the drive letter E: to M:

  1. Open regedit
  2. Goto HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices
  3. Rename the key \DosDevices\E: to \DosDevices\M:
  4. Restart the computer.

Source: 

Note:

Tested on Windows 7 64-bit.

Warning:

Changing the system drive letter is dangerous.
Changing drive letter should apply only for other than the system partitions.

Share Share Editor: editor | Posted: 2011/12/11 | Views: 17738

Comments

5 + 3 =
editor 06/28/2013 05:42:13
Hi hananel,

Changing the system drive letter is dangerous.

Changing drive letter should apply only for other than the system partitions.

Let me update the post with this warning.

Thanks for feedbacak.
hananel 06/27/2013 23:39:33
I've done that for tha system drive, a big error to do... then had to retore the system to a previous point..
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