[G4] Panic after OSX 10.3 install; Can't open disk drive

[Tony Gamble]

I'd like to chime in with a similar experience I've had with my  
MacBook:  had a disc that refused to eject, feared the drive was dead,  
but one every reboot I could hear it spin up briefly.  Tried  
everything everyone has mentioned here, and a few others, but in the  
end I discovered that the culprit was a flakey stick of RAM.  As soon  
as I pulled out the offending stick, the optical drive worked  
perfectly!  The RAM had worked just fine up until that point, and  
continues to work fine in another less classy laptop (ie. Windows  
machine), but for some reason it did not play happy with my Mac.

  - Tony

On 21-Dec-07, at 6:57 PM, Harry Freeman wrote:

> Greetings ( + )!( + )
>
> I would recommend that before you do the "eject cd that you do:
> 1)	reset-nvram (return)
> 2) set-defaults (return)
> Then use the Open Firmware command
> 3) reset-all (return)
> instead of the mac-boot command,
>
> I think that you'll need a "-" in the eject cd command
> i.e. eject-cd however I might be wrong!
>
> When you start up from your 10.3 install CD you might try opening  
> the "Disk Utility" and see if you can run "Disk Repair" and "Repair  
> Disk Permissions"
>
> I would also recommend the first thing that you do is reset "PRAM"  
> before booting into Open Firmware.
>
> Just my 2 cents.
> ----------------------------------------------------
> On Dec 21, 2007, at 12:11 PM, B G wrote:
>
>> To eject a disc with Open Firmware commands, follow these steps:
>>
>>   1. Restart the computer.
>>   2. Immediately after the startup sound, press and hold the key  
>> combination Command-Option-O-F.
>>      Note: The Command key has the Apple and () icons on it.
>>   3. Release the keys when you see a white screen that says  
>> "Welcome to Open Firmware."
>>   4. At the prompt, type: eject cd
>>   5. Press Return, then wait a few seconds. The disc drive should  
>> eject any disc that is present, and "ok" appears behind your  
>> command when the action is complete.
>>   6. Type: mac-boot
>>   7. Press Return.
>>
>>
>> Once you get it out no guarentee your install was succesfull so you  
>> may not be able to boot from HD.
>>
>>
>> Brian
>>
>> iBook G4 1.33 GHz 1.25 GB RAM
>>
>>
>>
>>
>> On Dec 21, 2007, at 12:02 PM, Rick Barrett wrote:
>>
>>> Hi G4 Gurus,
>>>
>>> I sure need some help.
>>>
>>> Just got a 15" flat panel G4 iMac (Codename Tessera, P80) that had  
>>> OS 10.2 on it, but lacked system or dock prefs!
>>>
>>> Mactracker says this 800 MHz model shipped with a CD-RW/DVD-R  
>>> "SuperDrive", but when I put my OS X10.4 install DVD in it it  
>>> didn't spin up, but ejected it after a few seconds, so I then  
>>> decided to install 10.3 and worry about the drive later.
>>>
>>> I ran disk one of the OSX 10.3 Install and all looked good through  
>>> "Optimizing System Performance" until suddenly I ended up with the  
>>> dreaded:
>>>
>>> panic (cpu 0) Unable to find driver for this platform.
>>> backtrace 0x008c2f4	0x0002a7a0	0x001f2204	0x001d4c5c	0x001d56cc	 
>>> 0x001d5d6c	0x00037430	0x00037364
>>> No debugger configured -- dumping debug information
>>> version string : Darwin Kernel Version 1.3
>>> Thu Mar 1 06:54:40 PST 2001: root :xnu/xnu-123.5.obj~1/RELEASE_PPC
>>> DBAT0: 00000000	00000000
>>> DBAT1: 00000000	00000000
>>> DBAT2: 80001FFE	8000003A
>>> DBAT3: 90001FFE	9000003A
>>> MSR=00001030
>>> backtrace: 0x0008c420	0x0002a7a0	 0x001001f2204	0x00104e4c	 
>>> 0x00104e4c	0x001d56cc	0x001d5d6c	0x001c621c	0x00037430	0x00037364
>>> panic: We are hanging here...
>>>
>>> (Ever hopeful, I tried the install twice, same results, now I'm  
>>> stuck.
>>>
>>> Not only that, I can't restart on any  disk except the 10.3  
>>> install CD (which just eventually gets me back to the panic) and  
>>> can't open the disk drive (no paperclip hole like every other Mac  
>>> i've ever had), mouse button down on restart doesn't work, F12  
>>> doesn't work!
>>> What now???
>>>
>>> Rick in 998133
>>>
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>>> G4 mailing list
>>> G4 at listserver.themacintoshguy.com
>>> http://listserver.themacintoshguy.com/mailman/listinfo/g4
>>
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