Um, you're thinking of Lilo. You don't have to run grub for the changes to take effect.
Um, that being said, it does not hurt to re-run grub to make sure that the proper bootloader installed on the MBR. This might be necessary if you recently changed partitions around, or perhaps if you installed a new O/S on *any* of your partitions (the install process might have written over the MBR). I believe the original post said that he recently installed FC5. I think the command you want is "grub-install" and not simply "grub". "grub-install" reads the menu.lst file and writes the stage1 loader to the MBR. "grub" simply pops up a grub command prompt and waits for you to enter the arcane grub commands. Alan -- TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ : http://trilug.org/faq/ TriLUG Member Services FAQ : http://members.trilug.org/services_faq/
