[SOLVED] How to fix crashed Mac after MultiBeast install?

Hi there,

I could really use some help and it's a bit embarrassing that this is my first post..

I accidentally installed Multi Beast 4.10 with all options, on my late 2010 MacBook Pro running OS X Lion with the latest patches etc (10.7.2 ?)

I know now that multi beast was not supposed to install on the host, but my laptop now won't boot, it now crashes with a kernel panic at every boot with errors about faulty CPU, voodooHDA etc !!!

How in the world can I reverse this situation? I can get into the recovery console and to a terminal prompt but I don't know what to do there and the file system (at least /system/library/extensions/) it says is read only..

Any ideas? Any help at all would be very appreciated, I am really stuck, it's my main computer and I have search far and wide on the web with no success so far.

Thanks a LOT in advance..

Daniel

Crashed my Mac after multibeast install, can I uninstall?

Hi there,

I just posted an item a few hours ago in probably the wrong forum;

http://www.tonymacx86.com/viewtopic.php?f=141&p=259829#p259829

Bottom line, I accidentally installed multibeast on my macbook lion and now it won't start, not even in safe modem is there any way I can repair/uninstall it from the recovery console? (right now my laptop is screwed!)

Thanks in advance!!!!!

Daniel

PS: any replies should go to the original post please and I will delete this post afterwards or just keep it as a link to the original one..

Re: Crashed my Mac after multibeast install, can I uninstall?

sorry

Re: Broke real MacBook with multi beast install, how to fix it??

hacman said:

boot using iboot ,remove your extra folder empty trash , run multi beast reboot

Click to expand...

hes done this onto a macbook pro, not a hackintosh



daniel, your thread has been merged into the original, in the right forum as this is about a macbook pro rather than a hackintosh

Re: Broke real MacBook with multi beast install, how to fix it??

@ samisnake i thought system definition

Re: Broke real MacBook with multi beast install, how to fix it??

Hi there,

Anyone have any suggestions of what I could do?

Thanks in advance.

Cheers,
Daniel

Re: Broke real MacBook with multi beast install, how to fix it??

It should be possible to boot to the recovery partition and reinstall OS X to your external hard drive. This is going to take quite some time, as it has to download Lion from Apple. Once it's done, you can boot from the external HD, and either:

Unpick your multi beast install by deleting the boot file(?) and the extra folder.

Salvage your data, partition your MacBook's HD, and install a fresh OS X.

If you have plenty of time on your hands you might want to try to reinstall direct to your MacBook (reinstalling Lion does not interfere with your personal data or apps), but I have no idea if this would fix the problem. I suspect not.

Re: Broke real MacBook with multi beast install, how to fix it??

H there,

Thanks for the pointer.

I tried reinstalling (which just finished) however it crashes at the same spot!!

I can now log into the console and mount the internal drive so I have write access..l I am deleting (/moving) the "extra" folder, what's those other boot files you are talking about?

Any further help, pointers or suggestions would be much appreciated!!

Thanks a lot.

Daniek

Re: Broke real MacBook with multi beast install, how to fix it??

There's a hidden dot file on the root of your system HD called .Boot. Macs don't use it. If you can't boot from your HD after trashing the /Extra folder you might try getting rid of that. Just a thought, but if you have access to another Mac, can't you start the MacBook in FW target Disk mode and connect it to the other Mac? That way you can treat the Macbook as if it were an external drive and back up/ partition/ reinstall/ restore.

Hi there,

Thanks for all the help everyone (and thanks @roguedesigner).

The issue is now resolved, there was some late night "fun" I would have liked to have avoided

The solution, for anyone else who might have this issue;

- You don't need to reinstall OS X Lion (10.7.x) I think, I did in the end but that did not even work (still crashed at boot), it was a waste of time and in fact it made things slightly worse as I had to run a lot of updates in the end. After the install however I did;

- Boot in Recovery Mode (Hold Command+R on boot, this is only available in Lion AFAIK)
- Go to Disk Utility
- Mount your existing mac partition (the one with the real OS on it that won't start) if its not already (mine wasn't because I am using disk encryption, so in Disk Utility I have to "unlock" the drive first, typing in my password)
- Exit Disk Utility
- Go to Terminal
- Go to your /System/Library/Extensions folder on your main OS X partition (not the recovery one), for me (with my partition called "Macintosh HD") it was /Volumes/Macintosh\ HD/System/Library/Extensions
- create a backup folder somewhere and move ALL the kext files out of the "Extensions" folder.
- copy the Kext files from the Lion recovery partition to the OSX disk, e.g.;
- also move the /Extra (in my case /Volumes/Macintosh\ HD/Extra) folder somewhere else
- Reboot while clearing the PRAM; shut down the Mac, start it holding [Option]+[Command]+P+R until you hear a sound and the laptop restarts itself again
- You are now in OS X started again!
- Re-Install the latest OSX Patch (in my case 10.7.2 - http://support.apple.com/kb/DL1459)
- Reboot
- Install any other updates (Apple Menu -> Software Update)
- DONE!!

And so this is for if you accidentally install Multi Beast 4.1 (Multibeast 4.1 or 4.10?) and because there is now way (how to / how-to) uninstall Multi Beast. Also, Safe Mode does not work, it just hangs there.. so do the steps as I said. Shame there is no how to uninstall multibeast

Thanks again..

Cheers,
Daniel

PS: If you just try to remove certain Kexts sound will likely not work. You have to remove ALL of the ones and copy over the bare install ones as is described above..