Change External Hard Drive Letter

1. Open Computer Management (Local).
2. In the console tree, click Disk Management.
3. Right-click a partition, logical drive, or volume, and then click Change Drive Letter and Paths.
4. Do one of the following:
   To assign a drive letter, click Add, click the drive letter you want to use, and then click OK.
   To modify a drive letter, click it, click Change, click the drive letter you want to use, and then click OK
5. To open Computer Management, click Start, and then click Control Panel. Double-click Administrative Tools, and then double-click Computer Management.