yes it is totally weird. after the first non boot of my win2000, I tried several time several change in the grub boot option (using the edit function you described) but even when the drive seems to be recognize all the time, it doesnt work

i'd like to know what grub does to my drive , for example last time it messed up so much with them that i had chs instead lba , a problem that seems recurrent with grub and xp, i changed the setting in the bios to force lba, and after some work and some /mbr and so on i got it working, I'm seriously thinking about giving a shot back to lilo, caus it is ****ing with my head