Kernel panic when trying to install Snow Leopard 10.6 in MacBook Pro

Question

Kernel panic when trying to install Snow Leopard 10.6 in MacBook Pro

When I upgraded my iPhone & iPad to iOS7.0.4, neither could sync with my laptop anymore to transfer data because I needed an iTunes not compatible with MacBook Pro 10.5.8,

I bought a family pack install disc of 10.6 OSX Snow Leopard, backed up data, then deleted so there was over 200 GB space. I checked and had the system requirements. I think it said install disc on the disc. All seemed to go well, and I got all the typical instructions, started it and said it would take 45 minutes. Perhaps 20 minutes or more into the process, the screen turned grey. I have followed the instruction to power off then power on. That does not work. The DVD will not eject. My computer is completely non-functional as is. I have a presentation to give in 13 hours. How do I get out the DVD? How do I either go back to 10.5.8 or go forward to 10.6?

Below is the log from the Kernel Panic.

panic(cpu 0 caller 0x55762459): "Unsupported cpu: family = 0x6, model = 0x2a, stepping = 0x7"@/SourceCache/AppleIntelCPUPowerManagement/AppleIntelCPUPOwerManagement-90/ pmProcessor.c:210

Debugger called: <panic>

Backtrace (CPU 0), Frame: Return Address (4 potential args on stack)

0x5549bd48 : 0x21acfa (0x5ce650 0x5549bd7c 0x223156 0x0)

0x5549bd98 : 0x55762459 (0x5576a7e8 0x6 0x2a 0x7)

0x5549bdc8 : 0x5575d393 (0x11 0x5576bd40 0x5576bda0 0x0)

0x5549bdf8 : 0x5575a05b (0x6b62800 0x6b21f80 0x5549be28 0x6be8100)

0x5549be18 : 0x5389f2 (0x6b62800 0x6b21f80 0x11 0x4fbe2a)

0x5549be78 : 0x536c27 (0x6b21f80 0x6b62800 0x6beaf00 0x6f23b80)

0x5549bf28 : 0x5371b8 (0x6b21f80 0x6be8b00 0x0 0xffffffff)

0x5549bf78 : 0x538e76 (0x6b21f80 0x0 0x5549bfac 0x1)

0x5549bfc8 : x29c68c (0xx6f02c50 0x0 0xffefffff 0xffdfdfff)

Kernel Extensions in backtrace (with dependencies):

com.apple.driver.AppleIntelCpuPowerManagement(90.0.0)@0x55759000->0x5 5770fff

BSD process name corresponding the current thread: Unknown (? - Text obscured)

Mac OS version:

Not yet set

Kernel version:

Darwin Kernel Version 10.0.0: Fri Jul 31 22:47:34 P (Text Obscured)

System model name: MacBookPro8,1 (Mac-94245B3640C91 (Text Obscured)

System uptime in nanoseconds: 15505049

You need to restart your computer. Hold down the Power button until it turns off, then press the Power button again.

MacBook Pro, Mac OS X (10.5.8), Trying to install 10.6

Posted on Feb 9, 2014 9:40 PM

Reply

Answer 1

a brody

Level 10

83,451 points

Feb 10, 2014 4:31 AM in response to SunnyMacBookProUser

Never install software before a mission critical operation without a backup.

https://discussions.apple.com/docs/DOC-1015 might help with the eject.

I'd take it in for service, as you'll likely get a quicker response there to solve the problem, if you don't have a backup.

If you do have a backup, just restore the backup.

Reply

Answer 2

Feb 10, 2014 8:46 AM in response to a brody

I solved it myself:

That link had ways to eject the DVD that would not work because the computer was stuck on the warning screen, so there was no way to use menus that require a working operating system. i found this however:

http://support.apple.com/kb/ht1533?viewlocale=de_de&locale=de_de

The method there that worked was to hold down the eject key while the computer is powering on. Almost immediately the install DVD ejected. Once it ejected, I took my finger off the eject button and the computer was able to boot up normally. When I checked, the installation to 10.6.8 was completed and fully functioning. The entire problem was caused by the DVD being stuck in the optical drive.

By the way, I DO back up before starting an upgrade, but I have no idea how you would restore a computer that has ceased responding to its keys and has no menus. If it were still stuck in greyed down screen with message above with DVD stuck in the drive, I would have no idea how to follow your instruction "just restore the backup".

Reply