When drive is attached to computer via USB cable and switched on, Windows does not build a drive letter for it.

Posted on 2007-08-08
Last Modified: 2013-11-05
This is a Beyond Micro brand external SATA hard drive that uses a USB connector to connect to the computer.  I have tried this drive on three different machines all with the same result.  The computer will recognize the drive but will not assign a drive letter.  When I go to Computer Management / Disk Management I see the drive with the following description:
Disk 1
465.76 GB                       465.76 GB
Online                              Healthy (GPT Protective Partition)

When I right click the right side of the drive description (the area that contains the GPT Protective Partition description, I get only the help option as selectable (everything else is grayed out).  On Disk 0, when I right click the same area, I get Open, Explore, Change drive letters and paths and Properties as my selectable choices.  Any help with this would be most appreciated.


Richard Aaron
Question by:rcaaron78
    LVL 1

    Expert Comment

    See if this helps. Look at post #4. Good luck!

    LVL 11

    Accepted Solution

    By the looks of the information there is only a protected partition there.  For further information about the different types of partitions, please see this document:

    Either you have not created a partition on the hard drive, or the protected partition is taking up all the space.

    Try creating a partition in Disk Mangement by right clicking in the panel to the right of the box showing the Disk 0 message. Use a extended partition as your choice (you can always delete it later if you want to divide it up).  Once that has been created, right click in that area on the right again and choose format partition.  That will create a section of the drive to use and should automatically provide you with a drive letter that can then be accessed from Windows Explorer, etc.

    Hope this helps.


    Author Comment

    According to the Microsoft article, GPT is for 64-bit systems.  Since my machine is 32-bit, that is why I cannot read the drive.  Thanks much.

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