Hi Folks,
So over last couple of days I’ve been looking out for ways to bifurcate the single x16 slot on my z87 based ITX mobo into 2 x8 channels (via risers).
I looked around the interwebs and it seems like while my board/chipset (ASRock Z87E-ITX) does support the feature, it is disabled via BIOS.
Some more looking around the Internet revealed that there exist several pre-modified BIOS’s with that option enabled [H]ardforum, however folks out there don’t seem to be very willing to share the BIOS.
ASRock support said they didn’t have such a file, so I figured that smart folks out here might have a solution.
Do you guys know how to modify an ASRock bios to enable such a feature?
Thanks!
EDIT: So just got a BIOS from a fine lady/gentleman over at the other forum, now is there a way I could “diff” the binaries or compare their hex’s and figure out a way to enable the bifurcation on other non-enabled BIOS’s (assuming chipset support is already present) ?
bump.
@psychic_quark :
Welcome at Win-RAID Forum!
I am sorry, that you didn’t yet get a reply to your thread opener.
Either nobody is nobody to help you or none of our BIOS Gurus has read your start post.
Nevertheless I wish you good luck!
Dieter (alias Fernando)
If the option is simply hidden from BIOS setup, perhaps you can find tools to unhide the option.
Everything else I can think of would require reverse engineering, or writing a utility that doesn’t really exist yet 
Wonder if you guys found a solution to enable bifurcation via bios mod? I have actually found a setting in Ami BcpEdit and the X99a MSI Godlike Bios that looks interesting. Under the IntelRCSetup menu there is a IIO0-3 IOU2 4x4 bifurcation option. I tried enabling it with no harm to my system but could not test wether it would be successful until I can buy a dual pcie slot riser card. The big question is wether you need hardware support on the motherboard or just bios support? Thanks