This is why you need to read the manual. GRUB does know the file structures for the OS it boots the kernel for otherwise it chain loads the boot loader for the other OS's. Remember what GRUB stands for.
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:redhat-list- > [EMAIL PROTECTED] On Behalf Of Kenneth Goodwin > Sent: Monday, August 04, 2003 11:51 AM > To: [EMAIL PROTECTED] > Subject: RE: GRUB failure > > > > > > > BIOS loads and starts the code from master boot record, > but code in > > > MBR fails to load stage1.5 which is located at a fixed > position on > > > hda. At that point, GRUB does not even know about > > "directories" yet, > > > since it is this later stage that would give native > access to ext2 > > > fs. The reason that GRUB fails to access hda can be > that > > BIOS uses a > > > different method to access the drive, while GRUB maybe > gets a wrong > > > drive Id and hence fails to find hda. > > > > > > However, Ashley has mentioned that this computer has > been working > > > fine with a single drive for several months until hdb > was added. > > > Only when hdb was removed, it started to malfunction. > So, if it's > > > not a BIOS thing that confuses GRUB, I don't see why > GRUB > > would fail > > > loading from hda. > > > > You haven't gotten the point of the question. GRUB is in > > the MBR from > > the install. It has a location to get to the GRUB > directory to load > > stage1 (we know that stage1 and stage2 and all other > things > > are in the > > GRUB directory look them up yourself). So it locates the > > GRUB directory > > to load stage1 then why would it now lose that location > to > > load stage2. > > > GRUB MBR DOES NOT KNOW LINUX DIRECTORY STRUCTURES > GRUB MBR DOES NOT KNOW EXTFS Filesystems > > > ALL IT KNOWS is an PHYSICal offset into the disk to start > reading from and a count > of bytes to read. This is very low level stuff. where it is > reading from on the drive > is not where the phase 1.5 is. (Or phase 1.5 is having a > similiar issue itself > > > -- > redhat-list mailing list > unsubscribe mailto:[EMAIL PROTECTED] > https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/redhat-list
