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Continuous reboot loop...

13763 Views 16 Replies Latest reply: Nov 22, 2008 11:00 AM by kimothymc RSS
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Big D! Level 1 Level 1 (0 points)
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Oct 8, 2008 8:08 AM
I recently ran the 10.5.5 system update on my iBook G4. However, when my laptop rebooted after the install it got to the gray screen with he spinning wheel, then it sat there for a while then it rebooted itself, now it's doing that in an endless loop. I can't boot into safe mode, or single user mode. However, I am able to boot from the install DVD.

I ran a permissions repair and a disk repair using disk utility, but that didn't stop the eternal reboot loop. So I'm thinking my only remaining option is to reinstall OS X. However my hard drive is too full for the archive and install (I've been meaning to buy an external drive, but I kept holding off because I didn't think it was a priority... now it is).

So here's my question: Can I use Disk Utility to make a copy, or a disk image of my iBook's hard drive onto an external drive, then do an erase and install on my iBook, then go back to the external drive and get the files I need off the disk image (will a disk image allow me to do that)? I'm really only concerned about my documents, photos, music & movies. I don't care if I have to re-install all my programs.

Anyway, I've learned my lesson and will start using Time Machine on the new external drive I'm gonna have to buy.

Thanks in advance for the help.
iBook G4, Mac OS X (10.5.5)
  • baltwo Level 9 Level 9 (59,150 points)
    Currently Being Moderated
    Oct 8, 2008 12:30 PM (in response to Big D!)
    Start with http://support.apple.com/kb/TS1541

    Incidently, updating/upgrading without a bootable backup/clone on an ext HD precludes being able to simply revert to a good known state and isn't in line with best practices. See these for details:

    http://docs.info.apple.com/article.html?artnum=106941
    http://www.macmaps.com/upgradefaq.html
    http://www.macmaps.com/backup.html
    http://www.thexlab.com/faqs/installswupdates.html
    http://www.thexlab.com/faqs/backuprecovery.html
    24" iMac 2.8 Core 2 Ext 4 GB RAM/G4 450 MP Gigabit 1.5 GB RAM, Mac OS X (10.5.5), (G4 w/10.5.5/10.4.11/9.2.2)
  • Vespoli Level 1 Level 1 (0 points)
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    Oct 10, 2008 5:41 AM (in response to Big D!)
    Getting the exact same issue. Is this widespread? ***?
    iMac, Mac OS X (10.5.5)
  • aaronbur Level 1 Level 1 (0 points)
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    Oct 16, 2008 10:20 AM (in response to Big D!)
    Same cases here, ran the 10.5.5 Security update, rebooted and now it is stuck in a loop. Cleared PRAM, Repaired Disk Permissions with no luck

    Mac Pro 4x2.8 Xeon with 4 GiB RAM
    OS X Server 10.5.5
  • Daithi378 Level 1 Level 1 (0 points)
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    Oct 16, 2008 2:07 PM (in response to aaronbur)
    Same problem with my MacBook. I updated to 10.5.5 and now I am in an endless reboot loop.

    Need to try to find my bootup DVD...

    MacBook, Mac OS X (10.5.5)
  • aaronbur Level 1 Level 1 (0 points)
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    Oct 20, 2008 10:17 AM (in response to aaronbur)
    Here is what I have tried so far...
    Reset PMU, no change
    removed motherboard battery and left for 15 mins, no change
    Ran extended apple hardware test, no errors found
    removed some RAM, moved RAM to different slots, no change
    tried drive in identical machine, same result, spinning wheel, then reboots

    I was able to boot into single user mode and check the software update log, every update, including the most recent one says installed. I dont know if that means that it started to install and never finished, or that it completely installed.

    I think I can rule out hardware problems. I am going to look into the startup sequence and try to see if something is hanging or missing.

    I will post back my results.
  • Daithi378 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Oct 20, 2008 12:57 PM (in response to aaronbur)
    Had to revert back to 10.5.4 using the install DVD and my Time Machine image. Nothing else worked.

    I will take my MacBook into my local Apple Store at the weekend and let you know what they report.
    MacBook, Mac OS X (10.5.4)
  • Vespoli Level 1 Level 1 (0 points)
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    Oct 22, 2008 5:25 PM (in response to Daithi378)
    Daithi - any luck/info? I can't even boot into safe mode or boot from the OS DVD. Am I alone on this? I use time machine so I'd have no problem reinstalling the OS and restoring, but I can't get in to do so. Help!
    iMac, Mac OS X (10.5.5)
  • stere0 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 12, 2008 6:42 AM (in response to Big D!)
    Same problem here. Just got a brand new MacBook Pro (late 2008) after my first one died. Luckily I had a time machine backup. I recover my last system using Time Machine. After a reboot my (brand new) system boots and reboots immediately after 2 seconds. I do not even see the Apple logo.

    My fix: boot from Mac OS X installation CD. Reinstall os and everything works fine. After seeing the number of posts complaining about this update I will wait until things settle.
    MacBook Pro (Late 2008), Mac OS X (10.5.5)
  • david koff Calculating status...
    Currently Being Moderated
    Nov 18, 2008 5:57 PM (in response to Big D!)
    I FOUND A SOLUTION.

    + booting from another LEOPARD device and applying the 10.5.5 COMBO update.
    + repairing permissions via disk utility
    + rebooting
    macbook pro, Mac OS X (10.5.5), balls
  • SethHester Level 1 Level 1 (40 points)
    Currently Being Moderated
    Nov 19, 2008 6:23 AM (in response to Big D!)
    The simplest method that can end a reboot loop is to boot into Safe mode. Give that a shot.
    iMac / Macbook Pro, Mac OS X (10.5.5)
  • Toon Lenaerts Level 1 Level 1 (0 points)
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    Nov 19, 2008 1:59 PM (in response to SethHester)
    Same problem here. After the update the computer started normal, but the battery wasn't charging when it should be. Restarting brought it in the loop.

    This is the second time I encounter such a loop after an update... I hope it didn't ruin my battery, as it did before (no hard evidence, could be coincidence)
    iMac G4, MacBook, Mac OS X (10.5.5)
  • Toon Lenaerts Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 19, 2008 2:00 PM (in response to Toon Lenaerts)
    Btw, I can't get it into safe mode.
    iMac G4, MacBook, Mac OS X (10.5.5)
  • mikeangus Calculating status...
    Currently Being Moderated
    Nov 21, 2008 12:24 AM (in response to stere0)
    I'm having the same issue. I have a new late 2008 MBP and made a Time Machine backup from my early 2008 MBP. The new one was working until I restored from the Time Machine backup using the Leopard disk. Now I'm in the endless reboot loop, can't reset PRAM, SRC reset doesn't help, and I can't even boot to the Leopard disk anymore. I can't enter single-user mode, safe mode, or target mode to do anything.
    MacBook Pro (late 2008), Mac OS X (10.5.5)
  • SethHester Level 1 Level 1 (40 points)
    Currently Being Moderated
    Nov 21, 2008 6:32 AM (in response to mikeangus)
    You may need to backup your drive and then Erase and Install.
    iMac / Macbook Pro, Mac OS X (10.5.5)
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