What to reformat when switching linux distributions
First of all, I'm very new to this forum.
I'm not very proficient with Linux but I'm not completely new either.
I got my girlfriend to use Linux because she was sick of windows. I set it all up for her, including fully partitioning her system. I made the following partitions:
She's been using the distribution I gave her for a while now, but it's not exactly what we were looking for(slow, buggy etc). I'm planning on switching to a different distribution tonight and I would like to keep things the way she has them for the most part. There isn't too much on it, but there are some files and programs--some which I had to install from source--that it would be nice to keep.
My question is: why partitions do I need to reformat, and which ones can I leave alone?
I suppose I should ask if it's even possible to do what I want first. If it isn't, ignore the first questions.
I'm guessing that I want to leave /home, /usr, /boot alone and reformat /root for sure, but I don't know about the others.
I really appreciate any/all input. I'm sure this is a great community!