On Thu, 2007-10-25 at 14:55 -0600, Karl Larsen wrote: > Ian Burrell wrote: > > Les Mikesell <lesmikesell <at> gmail.com> writes: > > > >> Karl Larsen wrote: > >> > >>> I put the root and setup on the same thing, (hd5,3) which is disk 2. > >>> Disk 1 has root at (hd0,4) and setup at (hd0) and in the grub.conf it > >>> has a chainloader to disk 2. > >>> > >>> This all works fine. But when disk 1 is booted it is at /dev/sdax. > >>> When disk 2 is booted IT is /dev/sdax. > >>> > >>> That is the problem. > >>> > >> That's not a problem - it would be a problem if it didn't do that. > >> Windows (and probably some other things) have to boot from the first > >> bios drive and chainloader has no way to know what it is about to boot, > >> so it has to make the drive first in the bios table as part of the > >> chainloading operation. So when linux is booted, it sees it as the > >> first drive too. The only problem is that you told it to do that, then > >> filed the result as a bug... > >> > >> If you don't want it to do that, copy the kernel and initrd you want to > >> use into the linux boot partition on what you think is the primary drive > >> and use the menu selection to pick those and set the kernel root on the > >> other drive. > >> > >> > > > > I am pretty sure that the grub chainloader command does not change the ampping > > of drives. There is a command, map, for remapping the drives. As you said, > > this is needed for booting DOS and early Windows that can only booting from the > > first drive. It should not be needed for chainloading other operating systems. > > Since Karl hasn't included his grub.conf, nobody can figure out where the > > problem is coming from. > > > > - Ian > > > > timeout=5 > > splashimage=(hd0,5)/grub/splash.xpm.gz > > hiddenmenu > > title Fedora (2.6.22.9-91.fc7) > > root (hd0,5) > > kernel /vmlinuz-2.6.22.9-91.fc7 ro root=/dev/sda5 quiet > > initrd /initrd-2.6.22.9-91.fc7.img > > title Fedora (2.6.22.7-85.fc7) > > root (hd0,5) > > kernel /vmlinuz-2.6.22.7-85.fc7 ro root=/dev/sda5 quiet > > initrd /initrd-2.6.22.7-85.fc7.img > > title Fedora (2.6.22.5-76.fc7) > > root (hd0,5) > > kernel /vmlinuz-2.6.22.5-76.fc7 ro root=/dev/sda5 quiet > > initrd /initrd-2.6.22.5-76.fc7.img > > title Fedora f7-64 > > rootnoverify (hd1,2) > > makeactive > > chainloader +1 Ah, the makeactive thingie may have something to do with it. That sets the "active" flag in the partition table on the disk so the OS marks that as /dev/sda. There can only be one "active" partition in the system. DOS and early Windows systems use that flag to know where they were booted from. It shouldn't be necessary for a Linux kernel, grub or lilo. ---------------------------------------------------------------------- - Rick Stevens, Principal Engineer rstevens@xxxxxxxxxxxx - - CDN Systems, Internap, Inc. http://www.internap.com - - - - To err is human, to moo bovine. - ----------------------------------------------------------------------
