Ubuntu and Fedora dual boot problem.

I have a HDD with Ubuntu 7.04 which was installed with the HDD
connected as primary master (which with my Ultra ATA card is
referred to as /dev/sda under Ubuntu, as /dev/hde under Fedora).
Ubuntu is in the first partition, i.e., /dev/sda1.

I want to use a HDD with Fedora Core 6 installed as primary master
and move the Ubuntu HDD to secondary master. There's already a
HDD with Windows XP connected as primary slave.

Figuring that the Ubuntu HDD had its own grub bootloader, I added
this stanza to /boot/grub/grub.conf on the FC-6 HDD:

title Ubuntu
rootnoverify (hd2,0)
chainloader +1

However when attempting to boot Ubuntu, I immediately get the
following:
-----------------
Booting 'Ubuntu'
rootnoverify (hd2,0)
chainloader +1

Error 13: Invalid or unsupported executable format
Press any key to continue
-----------------

I've tried tweaking the Ubuntu /boot/grub/menu.lst and /etc/fstab
files but it makes no difference - I don't think it ever got that
far.

Any ideas as to what could be wrong? Thanks for your help.

Regards,
Charles Sullivan

.

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