1 Reply Latest reply: Aug 5, 2008 1:41 PM by BDAqua
utkwhite Level 1 (0 points)
How can I get to disk utility when I can't get my imac to boot up. I get the following error:
KEXTD[25]:KEXTDwatchvolumes: couldn't set up diskarb sessions
Auto rebuild disabled.

imac, Mac OS X (10.4.10)
  • BDAqua Level 10 (121,620 points)
    Hi, and a warm welcome to the forums!

    Some things to try...

    Does it boot to Single User Mode, CMD+s, if so try...

    /sbin/fsck -fy

    Repeat until it shows no errors fixed.

    (Space between fsck AND -fy important).

    Resolve startup issues and perform disk maintenance with Disk Utility and fsck...


    Safe Boot... holding Shift key down at bootup?

    Does it boot into Open Firmware with CMDOption+of ?

    Have you done a PRAM reset...

    Could be many things, we should start with this...

    "Try Disk Utility

    1. Insert the Mac OS X Install disc that came with your computer, then restart the computer while holding the C key.
    2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
    *Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
    3. Click the First Aid tab.
    4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
    5. Select your Mac OS X volume.
    6. Click Repair. Disk Utility checks and repairs the disk."


    Then Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.

    The usual reason why updates fail or mess things up, is if Permissions are not fixed before & after every update, with a reboot... you may get a partial update when the installer finds it doesn't have Permissions to change one obscure little part of the OS, leaving you with a mix of OS versions.

    Some people get away without Repairing Permissions for years, some for only days.

    If Permissions are wrong before applying an update, you could get mixed OS versions, if Directory is the slightest messed up, who knows!

    If many Permission are repaired, or any Directory errors are found, you may need to re-apply some the latest/biggest updates.

    May even need to do an Archive and Install if you have room on the HD...