My external SATA drive order got switched with the internal IDE hard drive so that now the 3 Linux on that external drive do not boot. They were as; sda was the 250 GB external SATA, and sdb was the 200 GB internal standard IDE drive. This was caused by connecting that external by eSATA connection to a new computer with Vista 64, and I backed up some files from Vista to a NTFS storage partition on it. My main boot grub is installed on the internal hard drive with XP, SUSE, and Ubuntu, which all do boot fine, All the partitions do look just as they should, except when viewed from the bootable System Rescue CD with the; fdisk -l, then they are just switched, here is the current fdisk-l from booted into SUSE here;

fdisk -l run from SUSE on 3-24-09

Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x826d56f6

Device Boot Start End Blocks Id System
/dev/sda1 1 26 208813+ 83 Linux
/dev/sda2 * 27 1958 15518790 83 Linux
/dev/sda3 1959 3916 15727635 83 Linux
/dev/sda4 3917 30401 212740762+ f W95 Ext'd (LBA)
/dev/sda5 5875 7832 15727572 83 Linux
/dev/sda6 8094 10965 23069308+ 7 HPFS/NTFS
/dev/sda7 7833 8093 2096451 82 Linux swap /
/dev/sda8 3917 5874 15727572 83 Linux
/dev/sda9 10966 12988 16249716 83 Linux

Partition table entries are not in disk order

Disk /dev/sdb: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x89518951

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 7833 62918541 7 HPFS/NTFS
/dev/sdb2 7834 10444 20972857+ 83 Linux
/dev/sdb3 10445 12402 15727635 83 Linux
/dev/sdb4 12403 24321 95739367+ 5 Extended
/dev/sdb5 12403 12663 2096451 82 Linux swap /
/dev/sdb6 12664 14621 15727603+ 83 Linux
/dev/sdb7 14622 17885 26218048+ 83 Linux

If you're drive order changed than you have to change you're menu.lst
Remember that it starts counting at Zero so (Hd0,0)=sda1
Ask for a terminal as root or su use nano,pico , vi kwrite to edit the menu.lst and cahnge it
AS a example vi /boot/grub/menu.lst and change into the new order

Yes I did that, and the /etc/fstab files also need to be edited to match any partition changes, which I did do also. I booted to that Test Disk tool and did some minor partition corrections, (last one was deleted sda9, and the sda6 and sda7 were switched). And now I can boot 2 of the 3 Linux on that external drive.

After edit of all Linux /etc/fstab files for some partition changes, and then made sure my grub boot menu file matches the actual correct layout of the partitions, all Linux do boot up good now, thanks.