Hey everybody, I've been a frequent visitor to the MacRumors Buyer's Guide... but this is my first time visiting the Forums section. Apologies in advance for a long, detailed post... So, I've got a problem. I don't know the solution, but I think I know the cause. I decided to purchase and install Snow Leopard on my 2007 21" iMac. An error occurred during the install, and now my computer won't boot up. Each time I try, it attempts to boot up, but powers off after a few minutes. When I boot from the Install Disc and run the DiskUtility it tells me that my drive cannot be repaired and that I should immediately back up my files. Here's what I believe is the cause (and feel free to let me know if you agree or disagree): I very foolishly began the new OS install without enough hard disk space on my iMac. I imagine that that's what prevented the OS from completely installing, and I suppose that's what is preventing me from successfully booting up. Additionally, I attempted to boot my iMac as a firewire drive with a newer MacPro I have... but it would not boot, telling me that my iMac didn't have OS X installed. So, I guess I have two questions: 1) Are you familiar with this problem? And can you think of any easy solutions that don't involve cracking my computer open or going to a data recovery specialist. 2) If there are no easy solutions, what are my best options for data recovery? Sending it to a specialist? Taking the hard drive out of the iMac and recovering the data myself? Any thoughts you might have would be much appreciated. Thanks ahead of time!