Help! iMac w/new HD boot problem

Discussion in 'macOS' started by joalex1058, Jun 25, 2011.

  1. joalex1058 macrumors newbie

    Jun 25, 2011
    I have a 24" mid 2007 iMac OS x 10.5. Recently it had a SMART failure so of course I backed up using a 1TB external drive that I formatted w/2 partitions. On one I backed up using Time Machine and on the other I backed up using Tri-Backup 5.
    Bought a 2TB Seagate HD and swapped out the bad drive. Everything went well. I booted up from the external using the Tri-Backup. So far, so good! I then formatted the new internal using Disk Utility. Named the HD Macintosh HD (just in case). Did a verify permissions on it but it had a lot of differences so I repaired permissions. Now everything looks fine, right? Wrong!
    At this point, I restarted pressing the option key and selected the new Macintosh HD. I got the Apple, the spinning wheel...then it turned off! When I restart using the external drive, everything is fine!
    So I restarted pressing "D" and did a hardware check...all is good!!!
    I don't have the Install Disks to this computer. I bought it used from someone who didn't have them.
    What do I do?
  2. Jagardn macrumors 6502a

    Apr 18, 2011
    Did you set the GUID option on your boot partition?
    The 10.6 disk utility sets it by default from my experience, but maybe 10.5 doesn't?:confused:
  3. joalex1058 thread starter macrumors newbie

    Jun 25, 2011

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