Backup Suggestions?

I tried installing Little Snitch last night on one of my hard drives, after which my system took a big dump. Diskwarrior claimed to have repaired the disk, but upon reloading into that partition I get a kernel panic. Archive and install won't help. I am resigned to formatting, but there is a lot of information on that HD I would like to retain. I can boot into OSX on my other HD, but does anyone have a suggestion for a program that will bring that information onto my working HD. I have used data rescue before, but would like something a little more automated and don't know what program would be best. Preferably my end result would be the HD I can boot up into being as close to possible as my old HD was before it went down.
Thanks in advance