could be compatibility issues, U3S6 are compatible with only selected of motherboards, here is their compatibility list on the asus website:
Maximus III Formula
P7P55 WS Supercomputer
P6T Deluxe V2
Rampage II Extreme
Rampage II Gene
you could try to flash your motherboard bios to the newest version, and then try to update the firmware on U3S6 to the newest version as well. download the latest firmware here: http://www.asus.com/product.aspx?P_ID=lGYmelQ8mJvPtYTv
I also have a U3S6 and I had to deal with compatibility issues at first as well, however, after updating everything to their newest version, everything worked fine.
Can anyone boot off of a SATA DVD drive connected to the U3S6? Although my SONY DRU-V200S is detected by the U3S6 it will not boot from any bootable CD/DVD, it just hangs. Worse yet although the drive is recognized under all OS (XP, XP64, linux) any loaded CD/DVD is inaccessible (no medium found or timeout error). My U3S6 has the latest firmware (V220.127.116.11) and I've tried the Windows drivers listed by Asus. The only thing that works for the DRU-V200S is 'eject', but that's hardly useful if the CD/DVD can't be mounted. I specifically bought the U3S6 because it's an Asus product which Asus claims is compatible with my P6T Deluxe motherboard. I'm out of ideas.
If anyone is successfully booting/using a CD/DVD drive via the U3S6 please post your U3S6 firmware version. If this is on an Asus motherboard please include your BIOS version. Thanks.
why not connect the cd/dvd to the motherboard and boot it that way?
I'm not even going to bother to test if my dvd drive boots off my U3S6 because I see absolutely no point in doing this.
If you never need to boot off a CD/DVD more power to ya. All my mobo SATA ports are used, but I'd still like to make use of the SATA DVD which is faster and more convenient than an external USB 2.0 CD/DVD drive. Seems if you can boot off of a U3S6 connected hard drive then it ought to be possible for a CD/DVD drive as well especially since the motherboard BIOS sees it as a boot device.
the card is meant for Sata 6gb Hard drives as well as USB3 stuff... DVD drives are just fine with regular SATA 3 and lower.
Hmm, no. It's backwards compatible with SATA 1.5 which is what almost all SATA CD/DVD drives are. Besides, Asus Tech Support would have pointed that out to me in my recent support request. They know there is a problem, they just don't know what yet.