External USB drive doesn't show up any more

I have a Seagate Backup Plus external USB drive that was working fine. I wanted to make it bootable so I tried to follow the instructions here:

Unfortunately, my command prompt got stuck after the "clean" command and seemed it was never going to end so I manually closed the command prompt window. Next time I rebooted the computer I noticed that the external hard disk had stopped showing up in My Computers.

Is there any way I can get it back or does it seem damaged beyond repair?

I am using Windows 8.

Update: I see the drive mentioned under Disk drives in Device Manager only when I "show hidden devices".


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  1. Here how I solved it:

    Go to Computer Management.
    Select Disk Management under Storage.
    The hidden drive will appear there.
    Right click it and "change drive letter and paths".
    Add a drive letter.

    It will appear under My Computers.
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