When you plug external drives (storage devices, CD/DVD players etc’) to your computer, Windows automatically assigns them an identifying letter.
This sort of assignment is not always convenient. If you work in an Enterprise environment, you might be running a login script on startup that maps a network drive to the same letter that Windows assigns to a new drive.

In this case, you should manually change the letter assignment to the external drive you plugged in. And here’s how to do it:

1. Right-click My Computer, then click ‘Manage’.
2. Under Computer Management, click ‘Disk Management’. In the right pane, you’ll see
all your logical drives listed.

3. Right-click the drive or device you want to change, and then click ‘Change Drive
Letter and Paths’.
4. Click ‘Change’, click ‘Assign’ the following drive letter, click the drive letter you
want to assign, and then click OK.

[tags] PC Hacks, Windows [/tags]