How would I back up my stuff? I have an external hard drive that's big enough, just don't know what to do. I also have iWork '08, and if I reinstall, I wouldn't have to repurchase it or anything right?
I think the manual method described in http://support.apple.com/kb/HT1553 is good enough for me.
First time I installed Linux, no problems, but then I accidently erased the partition, and then the missing free space 268 MB would never add to my HFS+ Mac partition. Now when I shut down, it takes like 90 seconds, way slower than before. Would this be related to my partitioning troubles?
Use Disk Utility to format the external drive to Mac OS Extended (Journaled).