Assuming that there isn't a fault with the hard disk itself, the problem here is likely that the drive letter has been hidden by the operating system for one reason or another. Make sure that the drive letter really does exist, and there isn't a physical disk problem. If none of the drive letters of a physical disk are showing up, the problem is likely with the disk, so troubleshoot it . If it does, then this is likely a hidden drive letter problem. Make sure nothing is being hidden here.
Compression software can also play tricks such as remapping or changing drive letters.
You can unhide a hidden compressed volume host disk by running the compression software utility, which is normally called DriveSpace if you are using Microsoft's compression facilities. This page has been served 4729 times. Copyright 1997-2001 Charles M. Kozierok . All Rights Reserved. Not responsible for any loss resulting from the use of this site .