I am using the Hybrid UEFI/BIOS baremetal image is ok to boot up the dsm,
the usb vid/pid should be edited before you boot up.
Also i using the btrfs format on single disk, will try to build up with RAID1 on btrfs later.
No any error when the DSM update to newest vision 6.0.2.8451 update1.
My Testing Computer Spec:
-i5 2500K
-ASUS P8B75M
-16GB
-Onboard LAN and SATA
Sorry with my poorest english.