HarlanOklahoma

Q: Problem with partition map causes slow booting

iMac boots slow, about 8 minutes.  In disk utility, I get message: "Problems were found with the partition map which may prevent booting.  How do I solve the partition map problem?

iMac (24-inch Early 2008), Mac OS X (10.7.5), OS X (10.11.2)

Posted on Sep 19, 2016 7:55 AM

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Q: Problem with partition map causes slow booting

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  • by Eric Root,

    Eric Root Eric Root Sep 19, 2016 10:14 AM in response to HarlanOklahoma
    Level 9 (71,487 points)
    iTunes
    Sep 19, 2016 10:14 AM in response to HarlanOklahoma

    Do a backup, preferable 2 separate ones on 2 drives. Boot to the Recovery Volume (command - R on a restart or hold down the option/alt key during a restart and select Recovery Volume). Run Disk Utility Verify/Repair Disk and Repair Permissions until you get no errors. If this doesn't fix the problem, please post back.

  • by HarlanOklahoma,

    HarlanOklahoma HarlanOklahoma Sep 19, 2016 10:37 AM in response to Eric Root
    Level 1 (4 points)
    Mac OS X
    Sep 19, 2016 10:37 AM in response to Eric Root

    Well, I get the same message.  There's no "repair permissions" on version 10.11.6   My options on Disk Utility are First Aid, Partition, Erase, Mount, and Info.  Running First Aid shows everything okay except for the message about the partition problem.

     

    I already have all the data on another computer, but my old backup for Time Machine was on Firewire, and it is no longer connecting.  I don't know why.  It's an old external drive.

  • by Eric Root,

    Eric Root Eric Root Sep 19, 2016 11:08 AM in response to HarlanOklahoma
    Level 9 (71,487 points)
    iTunes
    Sep 19, 2016 11:08 AM in response to HarlanOklahoma

    If you can copy the data from the other computer, since Time Machine isn't working, try an erase/reinstall.

     

    Boot to the Recovery Volume (command - R on a restart or hold down the option/alt key during a restart and select Recovery Volume). Run Disk Utility and select First Aid. Reformat the drive using Disk Utility/Erase Mac OS Extended (Journaled), then click the Option button and select GUID. Then re-install the OS.

     

    OS X Recovery

     

    OS X Recovery (2)


     

    When you reboot, use Setup Assistant to restore your data.

  • by HarlanOklahoma,

    HarlanOklahoma HarlanOklahoma Sep 19, 2016 2:33 PM in response to Eric Root
    Level 1 (4 points)
    Mac OS X
    Sep 19, 2016 2:33 PM in response to Eric Root

    I succeeded in erase and re-install OS.  But the message is still there on Disk Utilities.  Perhaps the only solution is a new drive?