Well, I've installed CentOS 6.4 on my HP DL380 G4, but I've run into a bit of a snag. The old grub-legacy installed on the MBR says it can't find /boot/grub/i386/normal.mod when boot... [by InventiousTech]
How to to switch boot priority in Grub.
I have installed cent os 4.8(32 bit and 64 bit) on the same hard disk drive.
After installation in the boot menu it lists only 64 bit centos.
So inserted centos 32 bit live cd and recovered grub(using grub-install).