Run DiskWarrior from USB

Discussion in 'MacBook Air' started by angpan32, Oct 4, 2012.

  1. angpan32 macrumors newbie

    Oct 4, 2012
    I want to be able to rebuild the directories of my Mac Air (which is still fully functional) running DiskWarrior from a USB Key, but I have one issue I can’t fix.
    I have installed Moutain Lion on a properly formatted USB Key. I restarted my Mac (on which I have Mountain Lion) pressing the option Key,
    and booted from the USB drive. I then copied the DiskWarrior .dmg file from my Mac to my Desktop, and I have installed DiskWarrior on my USB drive (under utilities, in the app folder). Then I launched Diskwarrior and I selected my Mac’s hard drive, and DiskWarrior tells me “Directory cannot be rebuilt, DiskWarrior resides on this disk”.
    I don’t understand why this happens (since I am running DiskWarrior on the USB key), nor do I know how to fix it…any ideas?

    Notice that I am NOT also told “The Directory Cannot Be Rebuilt Because This Is A StartUp Disk” (I get this message (plus the above one), only if I try to run DiskWarrior when booting from my Mac)
  2. thomaskelly427 macrumors member

    Oct 3, 2012
    Brewster, New York
    You sure your booting from the USB drive and not the internal disc? Make sure to name the USB drive something different than the name of your Startup Disk.
  3. angpan32 thread starter macrumors newbie

    Oct 4, 2012
    yes, but...problem solved!

    I was booting from the USB (yes, I am sure), yet your comment was helpful in making me realise my mistake:
    I had added the Mac’s app folder (instead of the USB’s) onto the Dock of the USB’s User Desktop; so I had actually installed DW (DiskWarrior) on the Mac's app folder, so even if I was actually booting from the USB I was accessing an app which was on the Mac’s HD.
    Because of this, when booting from the USB and selecting the Mac’s HD, DW was telling me that “Directory cannot be rebuilt, DiskWarrior resides on this disk”, yet it was not telling me “The Directory Cannot Be Rebuilt Because This Is A StartUp Disk”, since truly I was booting from the USB drive.

    Now I moved DW on the USB app folder, and running it from there I can finally select my Mac's HD.

    Thanks for your help, cheers
  4. gaffy41 macrumors newbie

    Feb 21, 2015
    usb app folder

    Where can I get the usb app folder from ?
  5. Dweez macrumors 65816


    Jun 13, 2011
    Down by the river
    You would install DiskWarrior onto your bootable USB device once you're running from the bootable USB device, and subsequently run it from there.

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