I'd better mark this thread solved...
That suggests to me that it's probably safest to put grub in hda1 or so, and mark that partition bootable.
That's the default isn't it? Paul said that MBR is in the first part of hda1 - and because I'm also running windows it _has_ to be marked bootable (or somewhere before 1024 has to)
Thanks again for the help
Duncan
