Packets said:
Does the 20% free disk space still apply in Windows and where might I
find a discussion to this issue?
What 20% free space? Are you asking whether you always need to have 20% free
space?
My answer is a strong "No." There is no *percentage* that you need (except
that the built-in Windows defrag requires 15% free space). You need enough
free space and to do things like have the page file grow as needed. How much
space that is has nothing to do with a percentage. If you have a 10GB drive
with 20% free, you will probably very quickly run into problems with only
2GB free. But if your drive is a 250GB one, having 20% of it (50GB) free, or
even less, is very likely just fine.