Hidden USB drives

Posted on 2012-09-20
Last Modified: 2012-09-20

   I have a strange new behavior in my machine ( Intel I7-2600K CPU, 16GB ram, Win7 HP 64 bit)

   While things were working without problems, now when I plug in a USB drive it does not appear in Windows Explorer.  As I plug/unplug the drive I hear the tones from the computer indicating discovery/disappearance of the hardware, but it does not show up in explorer.
I first noticed this with USB "thumb"/stick drives and found it to be true also with a Seagate Free Agent external USB drive.  Note: these drives are working fine with other machines.
SD, Micro SD, Compact flash, etc. are still recognized. It's just USB drives that are hidden.

Any thoughts?
Question by:Spudstah
    LVL 6

    Accepted Solution

    Right-click on my computer and select computer managment.  Double-click Disk Managment.  You should see you drive there without a drive letter associated with it.  Assign it a drive letter and it should show up.  It sounds like it was assigned a drive lett from another machine and that letter was already in use on your machine, so windows removed it.

    Author Closing Comment


      I have accepted your answer although it was not quite correct.......However, you did sort of guide me to the solution.  Storage management did show the usb drive with the letter "N" assigned.
    In my house LAN there is a Buffalo Network Drive which had been previously assigned "N".
    Following the last power failure the drive had not rebooted and was not accessible but still hung on to the drive letter assignment and was shown in Windows Explorer with a big red X over it.  Rebooting the network drive it continued to show as "N" even if "disconnected" through explorer.  Rebooting the computer allowed a 'resetting' of the N drive letter.

    The USB drives are now appearing although the Buffalo drive vanished from explorer ( ....remapping the drive regains explorer access.)

    Thanks for kicking my posterior into the right direction <grin>

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