editing GRUB options

A question for Ubuntu 6.10 expert users:

I have 6.10-32-bit installed on an IDE drive which, due to a long and
boring story, is no longer in GRUB's list of boot devices. I have
6.10-64-bit on a SATA drive, with GRUB using its MBR. So far none of the
posts I have found on the Ubuntu forums address the specific issue of
adding another flavour of Ubuntu to what GRUB sees -- it's all about
dual booting Windows. Nor are the GRUB docs (as provided with 6.10)
clear on this operation. The IDE drive is visible to the Gnome Partition
Editor, but given the way Ubuntu goes about mounting things It's not
clear from fstab that "hda" hasn't been appropriated to refer to my CD
drive:

# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda1
UUID=f9bca81e-6097-4d15-b0bc-c99a30297c1a / ext3
defaults,errors=remount-ro 0 1
# /dev/sda5
UUID=6f405a21-db06-4bd8-9cb8-0fab0e7a9a7c none swap
sw 0 0
/dev/hda /media/cdrom0 udf,iso9660 user,noauto 0 0
/dev/ /media/floppy0 auto rw,user,noauto 0 0

There has to be a way to get there ... but I don't know enough to see
it. 8-(
Received on Sat Apr 14 20:49:07 2007