Boot Error 5...

[dominion_vortar]

Hi,
I just did a clean install of Ubuntu 8.04 using my entire, only hard drive. When I try to boot it gives me a boot error 5 message... The large partition is boot flagged, I don't know what to do!!

Please help,
Thanks, John ;)

[Pumalite]

This might help:
http://users.bigpond.net.au/hermanzone/p15.htm#5_