Does repairing disk permissions actually do anything?!

Discussion in 'Mac Apps and Mac App Store' started by Ben1l, Oct 14, 2013.

  1. Ben1l macrumors regular

    Joined:
    Nov 30, 2006
    #1
    I've been having an issue with FCPX crashing or freezing. I closed it down, and repaired the permissions of my startup disk in disk utility. There were hundreds of lines in the report when it finished. I then restarted the MBP and ran another disk repair only to see the same thousands of lines of code in the error report. The same thing always happens...

    I'm just wondering if this utility is actually doing anything useful? If not, are there any third party apps anyone can recommend?

    Thanks,
    Ben
     
  2. Stewart21 macrumors regular

    Joined:
    Dec 9, 2011
    Location:
    South Yorkshire
    #2
    I noticed the same thing with many iTunes files. It doesn't seem to make any difference to iTunes. Have you also Verified the disk using disk utility? Don't be tempted by Mackeeper.
     
  3. Ben1l thread starter macrumors regular

    Joined:
    Nov 30, 2006
    #3
    Yes have tried to verify....

    Seems odd that it appears to do absolutely nothing...
     
  4. Stewart21 macrumors regular

    Joined:
    Dec 9, 2011
    Location:
    South Yorkshire
    #4
    It does nothing with the iTunes files but can repair permissions for other applications. Have you tried deleting the application completely and then re-installing it?
     
  5. ItWasNotMe macrumors regular

    Joined:
    Dec 1, 2012
    #5
    Known issue with latest iTunes - see other threads

    Apple a little confused...
     
  6. gnasher729 macrumors P6

    gnasher729

    Joined:
    Nov 25, 2005
    #6
    It keeps some people happy...

    There is "disk repair" and there is "repair permissions". "Repair permissions" could fix apps that were improperly installed - that happened quite commonly many years ago which was why that utility was created, but should be exceedingly rare nowadays. "Disk repair" checks your disk and tries to fix problems. You have to boot from another startup disk or from your recovery disk.

    First step would be to make sure you have up-to-date time machine backups. Often crashes and especially freezing are a sign that your hard drive is on its way out. In that case a backup will be a life saver.

    You could buy a cheap external hard drive (always useful for backups), copy your hard drive with Disk Utility, and boot from the external drive. Check how that works. If it does, then it's quite likely a problem with the hard drive.
     
  7. magilla macrumors regular

    Joined:
    Aug 3, 2013
    #7
    Being a newbie, I'm a bit confused by your last statement about an external backup so feel free to correct me where I'm wrong.

    If the drive is "failing" and producing bad, for wont of a better term "sectors" with corrupted data, wouldn't copying the contents of the internal drive to an external one just transfer already corrupted data files to the external drive? Wouldn't you just be creating bad files on a good drive?
     
  8. gnasher729 macrumors P6

    gnasher729

    Joined:
    Nov 25, 2005
    #8
    There's a chance, but often files are not definitely corrupted but borderline. So if you read the same data ten times, it might work nine out of ten times. When you copy a file, it is only read once, so your chances are better.

    Hangs will often happen when your hard drive has to try repeatedly to read the same data, so that will definitely go away.
     
  9. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #9
    Some people repair, or recommend repairing permissions for situations where it isn't appropriate. Repairing permissions only addresses very specific issues. It is not a "cure all" or a general performance enhancer, and doesn't need to be done on a regular basis. It also doesn't address permissions problems with your files or 3rd party apps.
    If repairing permissions results in error messages, some of these messages can be ignored and should be no cause for concern.
     
  10. alksion macrumors 68000

    alksion

    Joined:
    Sep 10, 2010
    Location:
    Los Angeles County
    #10
    Yeah, every time I look at permissions in disk utility there's tons of iTunes permissions that seem be misplaced. I thought this to be weird behavior. I guess it's something with iTunes 11 then..
     

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