Multi Booting CentOS 4.4 and several openSUSE 10.2 instances,each one installed on it's own SATA drive attached to Intel's ICH8R on ASUS P5B Deluxe

In this case we do have to perform CentOS install from SATA Optical Drive,
otherwise CentOS won't work properly with several SATA drives.
So,option:-

 boot: linux all-generic-ide pci=nommconf 
  

is obviously unacceptable for production environment .


1.Install first instance of openSUSE 10.2 on /dev/sda putting GRUB into MBR (/dev/sda)
2.Install CentOS 4.4 on /dev/sdb putting GRUB into MBR (/dev/sda)
3.Install second instance of openSUSE 10.2 on /dev/sdb putting GRUB in root
partition of current instance.


Load CentOS and modify grub.conf as follows:-





Then run:-

# grub-install /dev/sda
  

and reboot the box.

Disk layout snapshots in different linux instances: