On vr, 2010-07-30 at 11:26 -0400, Stuart D. Gathman wrote: > On Thu, 29 Jul 2010, Brian McCullough wrote: > > > I guess I didn't understand the implications of switching to Grub 2, because > > I let Ubuntu 10.04 do so when I was trying to dual boot a Grub 1 machine that > > I had. Once it was finished, I could not find the old system at all, and the > > menu.lst ( or grub.conf or whatever ) in /boot/grub seems to have no effect > > on anything. At least changes that I make seem to do nothing. > > > > Certainly I can mount the LVs that comprised the old system, so I know that > > the install did not overwrite the LVs that I did not tell it to use, but I > > can not seem to boot the old system. > > Ubuntu installed a new grub, with config files in a new location, probably > in the Ubuntu root filesystem. Those are the only config files (that > instance of) grub will use. I've not used grub 2 yet. Unlikely, but perhaps > they renamed the config? Check man pages. > > Possible approaches: > > 1) You could mount that Ubuntu filesystem in other oses to modify its menu.lst. > > 2) You could add a Chain entry to the Ubuntu grub to load the old grub1 > in /boot/grub. This will require reinstalling grub1 to the partition > boot sector instead of the master boot sector. > > 3) Reinstall grub2 to a partition boot sector, reinstall grub1 to the > master boot sector, and add a chain entry to grub1 to boot grub2. > > 4) Reinstall grub2 to reside in the /boot/grub filesystem, overwriting > grub1. Mount that filesystem in Ubuntu and create symlinks as > necessary so that Ubuntu updates work properly. > > In all cases, before playing with all that, go burn yourself a copy of > Super Grub on CD. Very handy when your system is unbootable... > > Distro LiveCDs are also handy, but Super Grub is much faster when you > just want to boot grub. > The configuration system for GRUB 2 is completely different than what it was in GRUB. The menu.lst file now gets created automatically based on other config files. Look at /etc/default/grub. Search the web for GRUB 2 configuration if you need more info. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
