System+Boot+Drive+Letter+How+to+restore

System/Boot Drive Letter How to restore

Occasionally, if you make a change to the hardware/disk drive configuration, your drive letters may get changed so that the letter that was previously assigned to your system/boot drives (for example, C:) is no longer the same.

I am assuming that your C: drive was changed to D: and this is how to change it back to C:

Always practice Good House keeping and before you begin, you should back up your data and the system state, And bear in mind you must be logged on as an administrator.

First you may need to change Permissions: -

Now before proceeding backup your Registry ( See My Tip on )

Got to :- Start > Run In the box type without the quotes “ Regedit “

Scroll to :-

HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices Select MountedDevices

Then in Edit on the top toolbar Select Permissions.

Give Administrators Full Control permissions. Close Regedit

Next you can rename the drives: -

Again go through the previous procedure Scroll to :-

HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices

Find the entry for the original drive letter (in this case, \DosDevices\C:)

Right click it and select Rename. Rename to a letter that's not being used, such as \DosDevices\Z: Now find the entry for the changed drive letter (in this case, \DosDevices\D:)

Right click it and select Rename. Rename it to the original (\DosDevices\C:)

Right click \DosDevices\Z: Rename it to \DosDevices\D: Close Regedit.

Finally, change the Permissions back: Follow Steps 1-3 in the first set of instructions. Set Administrators back to Read Only. Close Regedit

Note: - You should use this procedure only if your drive letters were changed from the letter used when you installed XP.

Don't change the letter of the system/boot drive otherwise. 