When you install the Linux (such as SUSE Linux Enterprise Server 10 SP2 or Red Hat Enterprise Linux 5.0 Update 2) and boot the system into the Xen kernel, the OS cannot find the HDD during booting and the boot process cannot be completed.
This is due to the driver of onboard SATA RAID cannot support Xen kernel of Linux.
**This is a limitation of onboard SATA RAID.