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Old 12-05-2006, 02:10 PM   #1
x
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we are hanging here

Hello all,

I recently reinstalled osx 10.4 on my dual 2.3 g5 power mac.
Before doing this i backed up everything on an external hard drive.
After reinstalling i threw the Applications, Library and System folder into the trash and replaced them with with the Applications, Library and System folders i had backed up on the external hard drive.

I did this to try and retain my applications, prefrences, extensions e.t.c. I then restarted the computer. BIG MISTAKE!!!!!

Now everytime i turn it on i get the kernel panic screen (grey screen with large apple power button logo with "you need to restart your computer. Hold down the power button for several seconds or press the restart button") with following text overlayed:

panic (CPU 0 caller 0X002DE02) : unable to find driver for this platform:PowerMac7,3".

Latest stack backtrace for cpu 0 :
Backtrace:
0X00095564 0X00095A7C 0X00026838 0X002DE020 0X002BD350 0X002BD118 0X002BDB80 0X002BE1EC

Proceeding back via exception chain:

Exception state (SV=0X00559280) PC 0X0000000; MSR=0X0000D03; DAR=0X00000000; DS1SR=0X00000000; LR=0X00000000; R1=0X00000000; XCP=0X00000000 (unknown)

Kernel version:
Darwin Kernel version 8.0.0: Sat Mar 26 14.15.22 PST2000; root xnu - 792. obj~1/RELEASE_PPC

No debugger configured - dumping debug information MSR=00001030

Latest stack backtrace for cpu 0:
Backtrace:
0X00095564 0X00095C64 0X00026838 0X002DE020 0X002BD350 0X002BD118 0X002BDB80 0X002BE1EC 0X000A9654

Proceeding back via exception chain:

Exception state (SV=0X00559280) PC=0X00000000; MSR= 0X00000000; DAR=0X00000000; DSISR= 0X00000000; LR= 0X00000000; R1=0X00000000; XCP= 0X00000000 (unknown)

Kernel version:
Darwin Kernel version 8.0.0: Sat Mar 26 14.15.22 PST2000; root xnu - 792. obj~1/RELEASE_PPC panic: We are hanging here


I have tried starting up from the osx disc holding the option (apple) key,
the 'c' key,
the command key,
the option and 's' keys together,
the option and 'v' keys together.

None of these combinations work. I am totally at a dead end and would be really grateful if anyone has any ideas or suggestions.

Thanks.
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Old 12-05-2006, 02:32 PM   #2
hayne
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Quote:
Originally Posted by x
I have tried starting up from the osx disc holding the option (apple) key,
the 'c' key,
the command key,
the option and 's' keys together,
the option and 'v' keys together.

None of these combinations work.

First off, the Option key is not the one with a drawing of an Apple on it - that's the Command key. The Option key is labeled "option" and/or "alt".

So I'm not sure what keys you have been using.
Do you have an Apple keyboard?

To start up from the Install CD/DVD, you insert the CD/DVD, then restart and wait for the chime, then hold down the C key (no other keys) until it starts to boot from the CD/DVD.

If that doesn't work, then zap the PRAM and reset Open Firmware following the instructions in this doc: http://forums.osxfaq.com/viewtopic.php?t=7269

You likely need to do a reinstall of OS X from scratch (erase & install).
After that you should do Software Update to get your system up to date. Only then should you reinstall stuff from your backup.
And you should never touch anything under /System (unless you are an expert).
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Old 12-05-2006, 10:16 PM   #3
ThreeDee
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BTW, you should use an Archive and Install to keep all of your files intact while reinstalling.
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Old 12-06-2006, 07:50 AM   #4
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No luck

I've tried what you suggested, zap the PRAM and reset Firmware. I now get a chime when the computer boots up which i wasn't getting before and it has changed the screen resolution, other than that i'm still getting the same result.
I have tried starting up from the osx disc again holding the 'c' button but it gets as far as the white background and grey apple screen then ejects the disc and returns to the kernel panic.

Any ideas?
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Old 12-06-2006, 09:16 AM   #5
hayne
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Maybe the Install DVD is bad.
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Old 12-06-2006, 09:23 AM   #6
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Why did you decide to reinstall Tiger? Is there likely to be a connection between your problems now and the reasons for reinstalling Tiger that you haven't told us about?
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Old 12-06-2006, 10:32 AM   #7
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light at the end of the tunnel

The reason i reinstalled was previously i had 3 partitions, i was running out of memory on my main disc and had one partition with a load of free space on it. Also i had a problem with the main disc. When i tried to verify or repair it i would get an error message saying "unable to perform task. Disc reported failure on exit"
When i reinstalled i split into 2 partitions, scanned both of them and they were fine, so i'm not sure that previous problem has anything to do with what's happened now.

I think it might be because the g5 is trying to start up from the system folder in the trash and therefore crashes when switched on. If i could somehow get into the computer i might be able to locate the trash folder and pull the files onto the desktop which might sort the problem out. I tried putting it in target mode with my g4, the target icon came up on the g5 screen as usual but the drives didn't appear.................. hang on. Just tried it again since zapping the PRAM and resetting firmware and they have appeared!

Does anybody know where to locate the trash folder?
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Old 12-06-2006, 10:55 AM   #8
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Would it be a better idea to erase both partitions on my g5 with disk utility on my g4 using target mode, and then reinstall osx? Would i be able to start up the g5 to insert the osx DVD if i had wiped the discs? Treading carefully now!
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Old 12-06-2006, 11:24 AM   #9
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Everything seems to be ok now. Managed to start up from the install disc, so should be ok from here. Thanks everyone for your help!
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Old 12-18-2006, 12:53 PM   #10
TPB
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what did you do in the end that made it work.
did you use another mac or did the discs suddenly work ??
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