Sometimes for reasons unknown, Windows may change your backup drive’s letter. If you use it for automated backup purposes, this will interrupt your backup regime and needs to be addressed as soon as possible.
To restore the allocated letter for your drive, click the ‘Change Backup Drive Letter’ icon on the desktop, or click “Start > Run” and type “diskmgmt.msc” and click “Ok”.

Locate your Backup drive in the list, right-click it and then click “Change Drive Letter and Paths…”

Click the “Change” Button
From the list, select the letter that the drive is supposed to have.

Click “Ok”, and if asked if you’re sure click “Yes”.
Close all windows that you’ve opened for this tutorial, and you are done.
Tags: backup, drive letter, hard drive, system, tutorial
April 19th, 2009 at 2:10 pm
thanks mas. You helping me