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721 Views 9 Replies Latest reply: Oct 4, 2008 6:31 PM by Jim Chokey
1. re: Kernel panics. See my "Resolving Kernel Panics" FAQ. This FAQ includes step-by-step instructions for identifying and resolving some of the most common causes of kernel panics.
My FAQ is a roadmap: start at the beginning and work through to the end, following the instruction in the order specified, including the "If all else fails..." section if a cause or resolution is not found in an earlier troubleshooting step therein.
2. re: Boot from Backup. Use the Startup Manager
Author: Troubleshooting Mac® OS X
I may receive some form of compensation, financial or otherwise, from my recommendation or link.PM G5 Dual 2.3GHz, iBook 700, 30-inch Cinema HD Display, more!, Mac OS X (10.4.7)
Currently Being ModeratedJul 9, 2006 2:23 PM (in response to Jim Chokey)Hello Jim.
I'm sure it was a typo since there is no Titanium iBook.
Check Resolving Kernel Panics for information on the causes and a roadmap of troubleshooting steps you should take/follow in the order provided.
Check this link with instructions for using the Startup Manager.
http://docs.info.apple.com/article.html?artnum=106178PowerBook G4 17-inch/1.67GHz/1GB RAM, Mac OS X (10.4.7), 7200rpm-100GB HD, iPod w/Video
Currently Being ModeratedJul 9, 2006 7:28 PM (in response to Allan Sampson)"I'm sure it was a typo since there is no Titanium iBook."
You're right. It's a Titanium Powerbook G4 on which I'm not having the problem. (Of course, since that's the computer on which I'm not having constant kernel panics, I'm not sure if that clarification makes a big difference in diagnosing/solving the problem on the machine that is subject to the problem.)
I'll take a look at Dr. Smoke's list and see what I can do. Since I can't actually get into to OS X on my desktop machine, some of the diagnostics mentioned are not possible at this time. The references to the "Startup Manager" do sound like they may be extremely helpful. I'll investigate further and will let you know what results.
Currently Being ModeratedJul 9, 2006 8:09 PM (in response to Jim Chokey)OK: Here's a follow-up:
I tried using the Startup Manager and, to my surprise, that didn't seem to help. It still wasn't recognizing my firewire drive backups as volumes.
I then went to Dr. Smoke's diagnostic list and looked through it. The first step that seemed both relevant and possible to my situation was the suggestion (through a link to a help page) that I reset my PRAM and DVRAM.
So, I went ahead and tried rebooting (in OS X) while holding down option-command-p-r, and the machine booted fine. No kernel panic at all.
I decided to try immediately rebooting into OS-X as per 'normal' (i.e. without holding down option-command-p-r). The kernel panic recurred. Several attempts at rebooting revealed the following: (1) Wiith each attempt to reboot off 10.4.7 on the hard drive while holding down option-command-p-r, I had no problems. (2) With each attempt to reboot from 10.4.7 on the hard drive without holding down option-command-p-r, I got a kernel panic. Hmm.... (That seems significant, but what exactly it means, I don't know.)
I did find out that, if I held down option-command-p-r while rebooting, I was able to boot successfully into 10.4.7 from the hard drive, and that from there, I was able to reboot into with no problem into 10.4.6 from my backup firewire drive (even if I didn't hold down option-command-p-r).
At this point, I'm planning just to restore 10.4.6 to my internal hard drive from my backup, and hope that works. (I'll post and let you know if it does.) However, if the information presented above suggests anything to anyone (e.g. about more specific problems that I should investigate, perhaps with the RAM, I'd be most appreciative to hear your thoughts.).
Currently Being ModeratedJul 16, 2006 10:27 PM (in response to Jim Chokey)Hey... just thought that I'd folks know that I have successfully restored my hard disk to the 10.4.6 backup that I made prior to installing 10.4.7. Since doing so, I've had no kernel panics at all.
At this point, I think I'm going to hold off on trying to re-install 10.4.7 on my desktop, and just for further information/ideas/suggestions... or for 10.4.8.
Currently Being ModeratedJul 17, 2006 5:02 AM (in response to Jim Chokey)Did any of the panics leave a panic.log file on your Mac?
If so, please post the contents of the file here and perhaps one of us can dissect it to provide you with more troubleshooting information.Quad 2.5 GHz G5, 5 GB RAM / 1.2 GHz 14" iBook G4, 1.25 GB RAM, Mac OS X (10.4.7)
Currently Being ModeratedAug 21, 2006 12:09 PM (in response to William Kucharski)
Did any of the panics leave a panic.log file on your
If they did, I suspect I probably wiped them out when I restored from backup. (If you think they might still be there, let me know and I'll search for them.)
I guess I was so concerned with seeing if the problem could be eliminated by restoring from the backup that I didn't think to try to first get the data on those, so it could be diagnosed.
After that first incident, I haven't had the courage to try upgrading to 10.4.7 again. However, as 10.4.7 does seem to be running flawlessly on my TiBook (and on our new MacBook Pro), I guess I should give it a try one of these days. If so, and the problem returns, where exactly what I go to find the panic.log?
Currently Being ModeratedAug 23, 2006 3:17 AM (in response to Jim Chokey)I don't know of a restore will definitively wipe out old panic.log files, but they can be found in the directory /Library/Logs.
Quad 2.5 GHz G5, 5 GB RAM / 1.2 GHz 14" iBook G4, 1.25 GB RAM Mac OS X (10.4.7)