We have an R710 dell server with 6x585 GB. We are using a single RAID5 virtual disks to avoid to loose space. In this configuration the overall size of our Virtual disk is around 2.7 TB.
To handle more than 2 TB the UEFI has been activated in place of the legacy bios to activate the GPT option (http://www.novell.com/support/kb/doc.php?id=7003263).
But our goal is to use the virtualization with Xen and It seems that xen server dom0 cannot boot from the UEFI/ELILO.

Are there a solution to this issue ? Maybe with an other boot loader ?
Or must we swith back to the BIOS / MBR and to break the current raid configuration ?

Thank you for your help.