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Power interruption during data transfer

438 Views 10 Replies Latest reply: Jun 19, 2013 12:19 PM by Paul_31 RSS
Lutetia Level 4 Level 4 (1,855 points)
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Jun 19, 2013 11:33 AM

Hi All,

 

My mother recently upgraded her 2008 iMac Intel's original 250 GB hard drive to 500 GB.

 

As she had a (bootable) clone of her old drive, we opted to restore all of her data to the new drive at home using disk utility.

 

About half way through the transfer, the iMac's power cord inadvertently got unplugged from the power bar after being confused with my MacBook Pro's power cord.

 

Of course, the transfer was stopped in its tracks as the computer shut off.

 

I immediately realised what had happened and rebooted from the clone to begin the process all over again. (erase destination disk and copy contents of clone onto it).

 

The transfer completed and the computer is running perfectly. Repaired permissions and everything appears OK.

 

Still, I'm concerned about any damage that might have been done to the new disk as a result of the transfer being interrupted like that.

 

Anything we can do to avoid or mitigate any possible issues this incident might cause down the road?

iMac
  • a brody Level 9 Level 9 (62,145 points)
    Currently Being Moderated
    Jun 19, 2013 11:37 AM (in response to Lutetia)

    Backup your data again, as a clone.

    Then make sure the directory is good, by booting into single user mode with a wired Apple keyboard using command-S.   Type at the prompt

    /sbin/fsck -fy

     

    /sbin/mount -uw

     

    exit

    With a return after each line.   Repeat the first line if it says it needs to make changes.  If it says it can't make changes, buy Alsoft Disk Warrior and repair the directory.

  • Paul_31 Level 6 Level 6 (12,230 points)
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    Jun 19, 2013 11:39 AM (in response to Lutetia)

    You're probably fine. What OS is on the upgraded iMac?

    You could always run Disk Utility to verify the HD.

    If it's running Lion or Mountain Lion boot into the Recovery HD (restart holding down command + r), select Disk Utility, select Macintosh HD and click on verify disk. If any errors are found click on repair disk. Click on repair disk again until you get a clean pass then restart as normal from the Apple menu.

    If the Mac is running an earlier OS, boot from the grey install/restore disk that came with the Mac - disk in drive and restart holding down the 'C' key - when the Mac boots, select your language and from the menu bar of the next screen select Utilities>Disk Utility and follow the verify/repair process as above.

  • Paul_31 Level 6 Level 6 (12,230 points)
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    Jun 19, 2013 11:49 AM (in response to Lutetia)

    Have you got the grey disk that came with the Mac (there should be two of them - you need disk 1) . You should be able to boot from that as I described in my first post, or you could follow a brody's advice.

  • a brody Level 9 Level 9 (62,145 points)
    Currently Being Moderated
    Jun 19, 2013 11:50 AM (in response to Lutetia)

    command-R does not work with 10.6.8.  But a 10.6 installer disc that came with the machine if one did, or a retail 10.6 installer with a Snow Leopard logo might work, if your machine came with 10.5.8 or earlier.   Boot with the Option key, select the language in the installer, and you'll find the Utilities menu there to do the Disk Utility as suggested.  Or you can use the fsck suggestion I gave.  Both are the same program.

  • a brody Level 9 Level 9 (62,145 points)
    Currently Being Moderated
    Jun 19, 2013 12:15 PM (in response to Lutetia)

    Yes.

  • Paul_31 Level 6 Level 6 (12,230 points)
    Currently Being Moderated
    Jun 19, 2013 12:19 PM (in response to Lutetia)

    You're welcome.

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