I have used Acronis (windows version 10.0) to image 2 drives that booted and still do boot fine for suse 10.2. These are sata drives. I thought that after cloning the disks the sytem would boot fine since theoretically the boot information is still in the same place -- just with differing hardware.
I get a "No Operating Sytem Found" error when boot the new drives.

This is a single boot system. grub.conf and menu.lst are both the same as they were for the old drives. I changed from 2 300gb drives to 2 500gb drives.

Hi lightwave, Have you entered the BIOS to ensure the new drives are recognized there?
Good luck. ;-)

Yes, and to solidly verify the board sees them, I can additionally fire up knoppix on this workstation and all drive mount great under the /mnt mountpoint, which is how I got the info for menu.lst and grub.conf included here::::::

root@Knoppix:/media/sdb1/grub# cat menu.lst
--------------------------------------------------------------------------------------------
# Modified by YaST2. Last modification on Wed Dec 26 16:08:43 CST 2007
default 0
timeout 8
gfxmenu (hd0,0)/message
##YaST - activate

###Don't change this comment - YaST2 identifier: Original name: linux###
title openSUSE 10.2 - 2.6.18.8-0.7
root (hd0,0)
kernel /vmlinuz-2.6.18.8-0.7-default root=/dev/sda2 vga=0x31a resume=/dev/sda3 splash=silent showopts
initrd /initrd-2.6.18.8-0.7-default

###Don't change this comment - YaST2 identifier: Original name: failsafe###
title Failsafe -- openSUSE 10.2 - 2.6.18.8-0.7
root (hd0,0)
kernel /vmlinuz-2.6.18.8-0.7-default root=/dev/sda2 vga=normal showopts ide=nodma apm=off acpi=off noresume edd=off 3
initrd /initrd-2.6.18.8-0.7-default

###Don't change this comment - YaST2 identifier: Original name: floppy###
title Floppy
rootnoverify (hd0,0)
chainloader (fd0)+1
----------------------------------------------------------------------------------------------
grub.conf--------------

root@Knoppix:/media/sdb2/etc# cat grub.conf

setup --stage2=/boot/grub/stage2 (hd0,0) (hd0,0)
quit

If this helps... this does not boot the way these are

Have you tried switching the drives? Shouldn't (hd0,0) be sda, not sdb?
Good luck. ;-)

good idea, and I did try that. It hangs on a blinker cursor when I do that. Interestingly no "no operating system found" error though.

Keep in mind I ran the cat command on the drives as Knoppix has mounted them in its own fstab config. I think that is what you are refering to in the 2nd part of your post?

thanks

I'd have a look back through the bios, drive detection, boot order, and such.
Good luck. ;-)

When you switched the drives and it hung on a blinking light, did you try pressing the power button? Sometimes computers with ACPI capability can do that if your BIOS enables the ACPI but the kernel doesnt load the modules correctly (maybe they need to be reconfigged/compiled ?). Next time try booting with the drives switched and pressing the power button (not holding it until the box goes off) everytime the boot 'hangs'. if that works then you know exactly what you have to take care of.

Happy Hunting :-)

Good advice here.
I think setting the MBR and Grub only worked after setting a specific boot order in the BIOS. But everything I tried had to be done sequentially to see if each worked. 3 hours of rebooting configurations, and it worked. But to be honest, I believe I had tried the same thing before and it did not work. Well, it is running now.
Thanks,

until the next episode ...

You're welcome, glad you got it sorted.
Good luck. ;-)