PCIe Bifurcation on Supermicro x9dr7-ln4f

[cornbread]

I'm trying to set the pcie bifurcation option on an x16 slot to x4x4x4x4. I've updated to the latest BIOS (3.3) and the options are present in BIOS but when I try to change the option from x16, the only choice is x16. All the other slots are the same - they only have the one option they are currently set to. I've read a ton of other posts and material with people getting bifurcation to work properly on X9 boards but I've never seen anyone with my exact model of motherboard (x9dr7-ln4f). Anyone know if theres an issue with this board in particular or if maybe I'm doing something wrong or missed something?

 

[StevenDTX]

The X9s are very hot or miss as to whether they work with birurcation or not. I had three X9 motherboards, all of which stated they supported bifurcation, but I could never et it to work.

 

[cornbread]

The X9s are very hot or miss as to whether they work with birurcation or not. I had three X9 motherboards, all of which stated they supported bifurcation, but I could never et it to work.

When you tried - were you able to select settings other than the base and it didn't work for your application or was it like mine - only one option for each slot?
I've seen other people with X9 boards where they were able to select x4/x4 and it ended up still not working for multiple drives, but I'd at least like to be able to get to the point like that, where I can change the setting, if possible.

 

[StevenDTX]

When you tried - were you able to select settings other than the base and it didn't work for your application or was it like mine - only one option for each slot?
I've seen other people with X9 boards where they were able to select x4/x4 and it ended up still not working for multiple drives, but I'd at least like to be able to get to the point like that, where I can change the setting, if possible.

Youre right. I was able to select 4x4x4x4, but it was still only able to see one drive.