At the boot: prompt type linux apic.
When you install AS on a system that has an Adaptec 2944 or 3944 SCSI controller, the system might hang. If your system has one or more of the controllers, at the boot: prompt type linux apic and press the <Enter> key.
Note: For more information about installing Red Hat Linux Advanced Server 2.1 see
Red Hat® Enterprise Linux AS (Version 2.1) Installation Instructions and Important Information.