Do I really need to boot from another volume to verify disk?

Discussion in 'Mac OS X Lion (10.7)' started by bluearrow, Aug 20, 2011.

  1. bluearrow macrumors newbie

    Joined:
    Jun 27, 2011
    #1
    I don't have a USB drive to make a bootable version of Lion so I was wondering if I can just use Disk Utility to verify the disk in Safe Mode. Thank you.
     
  2. balamw Moderator

    balamw

    Staff Member

    Joined:
    Aug 16, 2005
    Location:
    New England
    #2
    In general you can, but it is able to do more if you are not booted to the dire you are verifying.

    B
     
  3. bluearrow thread starter macrumors newbie

    Joined:
    Jun 27, 2011
    #3
    How can it do more? I never noticed a difference when I used my Snow Leopard disk.
     
  4. arubinst macrumors 6502

    Joined:
    May 26, 2008
    Location:
    Lausanne - Switzerland
    #4
    You don't have the recovery partition either? It's automatically created by the Lion installer and it comes installed by default in post-Lion hardware.

    Just boot your machine holding the option (alt) key and then select the recovery partition. Booting while holding cmd-r might also work. It should boot directly to the recovery partition.
     
  5. bluearrow thread starter macrumors newbie

    Joined:
    Jun 27, 2011
    #5
    I never checked if I had a recovery partition. But If I boot from that will I be able to use verify disk in the same way as if I was booting from a USB? If so, why bother making a USB to boot from?
     
  6. balamw Moderator

    balamw

    Staff Member

    Joined:
    Aug 16, 2005
    Location:
    New England
    #6
    I've run verify and repair (usually not just verify) from the booted volume and usual from the install DVD. I have seen it happen that the self-check reports no issues but the one from the DVD actually manages to fix the problem. My guess is this has to do with files that are in use.

    As arubinst says, the recovery partition may be your best option here. I still have not fully adapted to Lion.

    B
     
  7. arubinst macrumors 6502

    Joined:
    May 26, 2008
    Location:
    Lausanne - Switzerland
    #7
    Yes, you should be. You would be repairing your boot partition from a different and independent partition.

    Actually, you don't have to make a USB. It may come in handy if your disk fails (as in physical failure) and you need to install Lion on a new drive. Or if you accidentally wipe your disk and your recovery partition. It has happened to some people trying to use Boot Camp.
     
  8. jamezr macrumors G3

    jamezr

    Joined:
    Aug 7, 2011
    Location:
    US
    #8
    You can make a DVD copy of Lion using this utlity:
    http://blog.gete.net/lion-diskmaker-us/ It is free and works great. It looks for the Lion install that was downloaded and makes a DVD copy you can boot to.....
     

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