[mythtvnz] HDD size for OS

[Noel & Di]

Setting up another fe/be combo, I found in a junk box a 1.7Gb HDD which 
I thought would be good for an OS-only drive, & subsequently put 
Mythbuntu 8.04 onto it with the intention of using a 400Gb drive as the 
storage drive.. the first of several in fact.

Well SQL would nae start - the OS drive was too small, and it squealed 
about the database ending unexpectedly. How sad.

Question: what is a reasonable size for an OS-only HDD?

I've got a couple of 40's and an 80 /somewhere/, in a safe place. just 
gotta find them. Might be quicker to buy another drive :o/
Noel