USB disk not unmounting

Discussion in 'macOS' started by stefangs, Jan 29, 2011.

  1. stefangs macrumors newbie

    Joined:
    Apr 27, 2010
    #1
    hi all,

    i have a bunch of USB disks connected to a Macintel with 10.5.8 via a hub. i only use these disks for backups, no apps or documents are accessed while working normally.

    one of the disks refuses to unmount. i always get the message that it's in use and i should quit applications etc. all my permissions are repaired, i've rebooted (it's been going on for a while) disk utility does not complain about the disk and all other disks unmount fine.

    what else can cause such behaviour?

    thanks,
    stefan
     
  2. Andeavor macrumors 6502

    Joined:
    Aug 19, 2010
    #2
    Have you unplugged them with the Mac off and then plug them back in after you reboot? I had a similar issue with an external drive via USB once that would not react until I did just that and after plugging it back in, it went back to normal behavior.
     
  3. stefangs thread starter macrumors newbie

    Joined:
    Apr 27, 2010
    #3
    i just tried this now and i was able to unmount. not having accessed the disk or more than a couple of apps, it looks like that did the trick. if so, it must be one of the strangest bugs i've seen! thanks for your help,
    stefan
     

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