Can multiboot distros share var, usr, etc. partitions?
I've been reading several posts on this subject over the past day or two. I have a couple of questions and would greatly appreciate some direction.
I think I would like to try installing the following on an 80 GB hard drive:
Windows XP, Debian, Slackware, Gentoo, and FreeBSD. I'd also like to set up a web server and maybe an e-mail server. I've never installed linux before but my goal is to learn what I can.
I've been reading about dividing up the partitions into /var, /usr, /usr/local,/swap,.../home and I want to ask what, if anything, I can reuse between OSes. If I install those 5 OSes I mentioned, will I have any space left for my files, including the web server database? I need to designate enough space for the OS-specific applications, correct?...what would be a reasonable amount of space for each? Would I be better off going to Circuit City and buying that 300GB Seagate for $100 I saw?