locked down my girl's mac

Hi everybody,

I managed to do something really really stupid..!!

Me and my girlfriend thought it would be great to share files, and when I was trying to do this, I thought it would be okay to remove "admin" from the list of who could control (read and write) my girlfriends computer. (Yes, I know. VERY smart) "System admin (?)" was also on the list, so I thought it was safe to remove anything else. But as it turned out, my girlfriend is now unable to do anything with her mac. It frozed all of a sudden, and when she restarted it, it wouldn't turn on. It's just showing a blue screen.

I tried to access from my computer, since I was trying to get access in the first place, but no.. - no access.

What to do??? Maybe some codes or something..? Mine is a macbook pro 10,6. Her's is a macbook.

Have you tried to start from the installation disc?

No, I haven't tried that yet. I only have the disc for my computer here.. Her discs is in another country.. heh.

You think that's the only way?

That's probably the simplest way. You should be able to use your disc because you aren't installing anything. Just pop in the disc and start her computer while holding the C key and it'll start up from the Installation Disc after a bit. Once you have that running, open Disk Utility from the Utilities menu, and from within Disk Utility, select her hard disk in the pane on the left and then click Repair Disk Permissions. That should hopefully fix things.

In fact the only way. Get her discs sent to you or buy a new set, boot from them and do a format of the drive and reinstall. Don't think an archive and install would work as you are unable to access the files.

Guess you are very lucky you are still her boyfriend?

Hehe, I upgraded her version to snow leopard using my disc. That fixed everything, in fact my girlfriend was very happy with the outcome... Thanks for all the help =)

I will from now on be more careful when playing with different setting. Never thought I could do so much damage

I messed with my mums mac once...... installing new osx on it, and the long and short is that her external hard drive that I used to back it up first, was corrupted, and lost most of her system.
The difference is though that she is my mum, and she loves me anyway.... but if it were my girlfriend, that would have been the beginning of the end!
I think you are one very very lucky man with the outcome, and don't ever forget that gut wrenching feeling that you had if you ever do get tempted to tinker with her mac before being sure that you have a working bootable backup.

I would highly recommend CCC Carbon Copy Cloner - Home or Super Duper SuperDuper! though, not only as something that you should have already, but also as a safeguard in case temptation gets the better of you