Stupid question: What size harddisk should I get?

[Peter Anvin]

Hello.
I am a student, and I am planning to upgrade my computer to a 386 quite
soon.  I would like to able to run MS-DOS, MS-Windows 3.0 and UNIX (or some
other -IX) on it, so my questions are:

   1. What ...IX should I get?
   2. How much hard disk space should I count for the ...IX system?

I am looking into getting an 80386DX-25, if it makes any difference, and
have no plans of running OS/2, at least not until the 386-specific version
comes out.

Thank you in advance,
   / Peter

P.S: If this is an FAQ in this newsgroup, I apologize.
P.P.S: If I get replies by mail, I will summarize to the net.
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