Disk management refuses to assign a disk letter. Help!

Discussion in 'Windows Vista Installation' started by Andy G, Aug 13, 2008.

  1. Andy G

    Andy G Guest

    I have a WD MyBook external hard drive, capacity 250GB. It is a USB device
    and needs no drivers, or at least it didn't when connected to my previous HP
    notebook running XP.

    When I connect it to my latest HP notebook (Compaq 6720s), it shows up in
    Device Manager, which lists it as working properly. However, there is no
    sign of it in Explorer or in Computer. When I look in Admin Tools under
    Disk Management, it is shown as Disk 1, but with no drive letter. If I
    select it and right click and choose "Change Drive Letter and Paths", I get
    an error message saying:

    "The operation failed to complete because the Disk Management console view
    is not up to date. Refresh the view using the Refresh Task. If the problem
    persists close the Disk Management console, then restart Disk Management, or
    restart the computer."

    As you will guess, neither refreshing nor restarting makes any difference.
    What on earth do I do to perform this apparently simple operation?

    Any help appreciated.

    Andy G, Aug 13, 2008
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  2. Andy G

    JimB Guest

    You mentioned only that it is visible and that you can't change the
    drive letter. Does it work normally ?
    JimB, Aug 13, 2008
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  3. Andy G

    Andy G Guest

    No, it does not work. It is not shown in Explorer. It has no drive letter

    Andy G, Aug 13, 2008
  4. Andy G

    Ramesh MVP Guest

    Select the dis
    *LIST partition [id]

    now select the appropirate partitio

    Ramesh MV

    'Ramesh Kumar' (http://itsmywindows.com)
    Microsoft MVP
    Windows Desktop Experienc
    Ramesh MVP, Aug 13, 2008
  5. Andy G

    Andy G Guest

    Trying to do what you say, but assign apparently only works on a selected
    volume, (not a partition). I can list a partition for the disk in question
    but I cannot list or select a volume.....

    Any ideas?
    Andy G, Aug 14, 2008
  6. Andy G

    JimB Guest

    I'm not sure here, but is there stuff on it ? Otherwise I would format
    it in NTFS (eventually partition it) from within the OS on which it is
    connected; than I guarantee you it will be able to assign drive letters.
    JimB, Aug 14, 2008
  7. Have you initialized and formatted the external HDD ?.

    Roberto le Cornielle, Aug 15, 2008
  8. Andy G

    Andy G Guest

    Well, there is stuff on it, which is my only backups! I'm loath to format
    the drive as I cannot backup to DVD first, as that has stopped working too.
    So if the format fails, I'd be in a difficult place.

    From what I can glean from various utilities, Vista, (and Diskpart), see no
    volume on the drive, although they both see a partition...

    My old XP machine mounts the drive straight away, and I can see and use all
    Andy G, Aug 15, 2008
  9. Andy G

    JimB Guest

    I suggest you BU the drive to another one using your XP. Afterwards
    format it on your Vista using Diskpart. I must honestly say that I had
    once to buy another HD just to be able to return a HD to the shop I
    bought it from. It was acting strange, and I got another one. Now I
    always use a second HD to BU the first I use as a BU. So I always have 2
    JimB, Aug 15, 2008
  10. Andy G

    Curious Guest

    What happens when you try and assign a Drive letter to the Partition?
    My world book backup uses the drive letter I assign to the partition.
    Curious, Aug 15, 2008
  11. Andy G

    Andy G Guest

    What would be the way to do that?

    I don't seem to be able to do anything via "Disk Management, (see my very
    first post), and as far as I can see you cannot assign a drive letter to a
    partition using "Diskpart", only to a volume, which does not seem to exist.

    Is there something else I can try?

    Andy G, Aug 15, 2008
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