[epochwolf]

Sure, but that's not "easy to install". That's "faster for an expert to install".

The partitioner on Ubuntu's LiveCD is easy to use. (Choose full disk and go)

[BasDirks]

OpenBSD installer can auto-partition the disk for you.

[sigil]

You are correct, there's a whole disk auto-partition option now. I guess it's been a while. :)

http://www.openbsd.org/faq/faq4.html#InstDisks