Mac OS X crashes on restart after running Windows 7 under bootcamp

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Mac OS X crashes on restart after running Windows 7 under bootcamp

Hi,

Have a strange problem that has only just cropped up recently.

I upgraded to Lion on the day it came out and have booted into my bootcamp partition several times since then however, the other day i booted into Windows 7 and after restarting to go back into Mac OS X, it booted to the desktop, i saw the FInder load and then it just restarts. It then boots into Windows again (next available boot drive i suppose). I then restart into Mac OS X, picking it from the Bootcamp menu in the Windows 7 system tray but it then does the exact same thing - boots into Mac OS X, loads the finder and then restarts into Windows again.

The only way i have been able to boot into Mac OS X is to hold shift at start-up when the Mac drive is selected to boot into, in order to boot it into safe mode and then run Onyx to do a few maintenance tasks. After a restart, Mac OS X boots perfectly again.

I have seen countless posts about Lion not allowing Windows 7 to boot but not the other way around as in my situation.

I have installed Bootcamp 3.3 on Windows 7 and have a completely up-to-date version of Windows 7 and Mac OS X but this still doesn't fix the problem.

Can anyone suggest why this might be happening or what i can do to fix it? I'd like to fix this if possible as i can't go through the rigmoral or having to boot into safe mode and then use Onyx everytime i use Windows. I only use Windows for gaming though so it isn't critical but still a pain.

Many thanks in advance for any help or advice!

iMac, Mac OS X (10.7.1), 21.5" Late 2009 Model

Posted on Aug 25, 2011 2:48 AM

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Answer 1

Aug 25, 2011 2:57 AM in response to 1point79mhz

With Lion, you should use Bootcamp 4 and not Bootcamp 3.3, see here: Boot Camp 4.0, OS X Lion: Frequently asked questions.

There has also been released an iMac Graphics Firmware update recently. Just run your Software Update to check if your system requires this.

And if you are only able to boot into safe mode in Lion, you should check your harddrive for issues or if there any system extensions installed that might cause this.

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Answer 2

1point79mhz Author

Level 1

4 points

Aug 25, 2011 3:00 AM in response to probe_droid

Hi probe_driod.

Thanks for your help. I ran software update this morning and the only thing that appeared was an updated version of iTunes. I manually downloaded the Graphics Firmware update but it said it did not apply to my system.

It is to my understanding that i cannot install Bootcamp 4 over the top of my Bootcamp 3.3 installation without first removing my bootcamp partition (therefore destroying all of my data) and then installing bootcamp again from scratch. Is this correct?

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