Questions? Call +31-157-112-149
or Contact us online

Mac OS X: My (removable) disk appears twice, how do I fix that?


A double disk is visible when:

  • the disc was closed, removed or otherwise disconnected (while the drive is in use), and then re-connected.
  • the computer was turned off suddenly.



  1. Disconnect the drive
  2. Stop the CrashPlan backup machine (in terminal)
    $ sudo launchctl unload /Library/LaunchDaemons/com.crashplan.engine.plist
  3. Now go to the folder /Volumes in terminal
    $ cd /Volumes
  4. Make sure there is nothing on the undesired double disc (ending in "1")
    In this example we assume that the name of the double disc "Data" is.
    $ sudo ls -lat Data 1
  5. Is there something there? If it is unnecessary, delete it. Or move that folder to another location, so it does not interfere when the disk is reconnected.
    $ sudo mv "Data 1" /Users
  6. Now connect the drive again. You should now see that there is only one indication of your disk.
  7. Go ahead and start the CrashPlan backup machine again.
    $ sudo launchctl load /Library/LaunchDaemons/com.crashplan.engine.plist

That was it.

Source: Apple TS2474

Mac OS X: Meine (Wechsel-)Festplatte wird doppelt angezeigt. Wie löse ich dieses Problem? Mac OS X: Mijn (verwisselbare) schijf verschijnt dubbel, hoe verhelp ik dat?