Help Recover from Kernel Panic

[yaemish]

Like an idiot, I editied my IOPCIfamily.ktext. Now I get a kernel panic when I boot. The message is IOPCIfamily cannot be found. I know what I edited it in the file. How do I fix it though?

[nagal]

boot into the install DVD, go to utilities and edit the kext in terminal. Be sure to also rm -rf the Ext cache. Also keep in mind you will be working from /Volume/<os x partition name>/System/Library/Extensions/ and not /System....

[yaemish]

Since I can't boot the DVD, I was able to boot by hitting F8, then booting using options -v -f -x. This let me log in with safe mode.

 

Once in safe mode I did the following;

 

edited /System/Library/Extensions/IOPCIfaimly.ktext (removed the change that caused the problem)

 

did sudo rm /System/Library/Extensions.mkext

did sudo kextcache -k /System/Library/Extensions

Repaired my permissions and rebooted.

 

I am still getting kernel panic when booting normal and have the message "IOPCIFamily can not be found". The boot error is linked below.

 

Any thoughts on what to do?

 

[nagal]

That looks more like a AppleACPIPlatform.kext error. List some specs on your system and how you installed so we can get a better idea of what is going on. In general, when I get this error it means my kernel is not built against the AppleACPIPlatform.kext that is on my system or vice versa.