Results 1 to 2 of 2
  1. #1

    Member Since
    Oct 02, 2010
    iMac not recognizing start-up disk
    Time Machine froze my computer two days ago, and when I tried to restart, I got the lovely folder with a question mark. I reset the PRAM (Apple Support told me to wait four chimes), and everything was fine.

    Today, the same thing happened. I was able to get my Mac up and running to try and repair the disk through Disk Utility, but it wouldn't repair, so I tried to run Disk Utility and repair the hard drive through the install CD. I got an error saying "invalid sibling link", and now I'm unable to get my computer to boot up at all without the install CD, and even when I do get the install CD to work, my hard drive isn't recognized.

    I've tried resetting the PRAM, but nothing seems to work.

    Any suggestions? I have everything backed up (thank God), so even if there is some way to just reinstall the entire system from the install CD, that'd be fine.

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Fort Worth, Texas
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, El Capitan
    Here's a LINK with instructions on how to fix that error. However, if you're not comfortable with using Terminal you may be better off doing a reinstall and then restoring from Time Machine.

    Also, it's possible that your hard drive is failing or getting ready to fail. It's a good idea to make sure your backups are up to date. You didn't mention if your iMac is still under warranty or not. If it is, it might be a good idea to let Apple handle this problem for you. Changing out a hard drive in an iMac is a fairly difficult task.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Start Up Disk is full and IMAC wont boot
    By mroot in forum OS X - Operating System
    Replies: 1
    Last Post: 10-01-2012, 06:57 AM
  2. iMac G3 not recognizing disk?
    By itsmewallis in forum OS X - Operating System
    Replies: 4
    Last Post: 07-04-2012, 12:20 AM
  3. iMac start up disk - over 400gb available
    By Artintx in forum Apple Desktops
    Replies: 1
    Last Post: 02-19-2012, 06:26 PM
  4. Replies: 4
    Last Post: 06-09-2011, 11:36 AM
  5. iMac keeps on using Mac Osx Disk when start up
    By MacUser69 in forum OS X - Operating System
    Replies: 3
    Last Post: 05-16-2011, 07:27 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts