I hope this works, 3rd times a charm. I'm having a time getting OS4C installed, think I got my boot partitions under 4GB now, so hope that works. I'm using the A1200 IDE port.
:rtfm:
I don't think they mention this (4GB stuff) in the install guide...
minutes later....
It's is now booting properly! Yeah! less than 4GB is the trick.