after an update yesterday, my file system was corrupted. i couldn't log in because there were errors found while cheking the disk drive. after a series of fsck and reboots and recovery modes, i managed to log in. the first thing i wanted to do is to install gsmartcontrol to check the filesystem, but i found out that i can't load synaptic, and my dpkg gives error, so i can not install anything manually.
i don't know where to start to rescue the disk.
ubuntu 12.10 on apple macbook pro