I have FC3 in several versions loaded on my ThinkPad a31p on both the internal 80GB and a second 60GB in the second hard drive slot. 

Everything starts ok unless I have swapped the second drive with an add-on battery which can use that same slot.  When I have the battery in, grub say GRUB loading, please wait…”, then Error 21 and hangs.

Does anyone have any ideas how I can fix this?  Otherwise, will lilo work if I use it instead of grub?

TIA,

Max