Recently i have try to install Redhat 5.3 on a system that is running on Sata disk. Ufortunately i’m unable to install it since the disk was not detected. The simplest solution is to disable “msi”

When you insert the DVD, in the boot option dont just press enter. Just put

linux pci=nomsi

Then you can proceed with the instalation. This method already tested on Centos 5.3 an Redhat 5.3.