Hello

During an attempt to defrag my macbook with Snow Leopard installed using Drive Genius 2.2, something happened, the process stopped and the file system was corrupted to the point that I cannot even boot the system anymore with the error window that usually appears after a crash.

I tried to reinstall MacOS 10.5-6 overwriting the existing one but the only option I am given is by initalize the disk and losing all my data....