On 03/01/11 10:37, Ron Blizzard wrote: > On Mon, Jan 3, 2011 at 4:15 AM, Ned Slider<ned at unixmail.co.uk> wrote: > >> You don't need to upgrade grub, I'm quite happily dual booting rhel6 GA >> on a CentOS-5 system (using C-5 GRUB). >> >> Only thing I did differently is the rhel6 /boot partition is mounted on >> an ext3 partition whereas I _think_ the default might be ext4 which, as >> a wild guess, is probably unsupported by CentOS-5 GRUB ? >> >> The rest of the system is quite happily sitting in an ext4 partition >> using md raid on lvm. > > Hi Nick, > > Thanks for writing back. I'm using ext3 also. Is it possible to see > your RHEL 6 grub entry? Did you install grub on the RHEL boot > partition and use a chainloader, or were able to just do a normal > entry? > > Again,t hanks for any ponters. > Yes, I installed rhel6's grub to the rhel6 /boot partition during the rhel6 installation and then added a chainloader entry to the end of the CentOS-5 /boot/grub/grub.conf to boot rhel6: title RHEL6 Buildsys rootnoverify (hd0) root (hd0,1) chainloader +1 Adjust to suit your partitioning scheme :-)