It boots with the ASUS Hyper M.2 in 2nd pcie x16 slot with the boot drive in slot 1 and the data drive in slot 3. 2 and 4 wont show a drive. It suites my needs. Thank you.

@nickname_in_forum - You're welcome! Once you figure out which slot is which in BIOS settings, you can usually get at least 3x drives working using the 4x4x4x4x setting, or one of the 4x4x8 / 8x4x4x.

It seems that I'll have plenty of tweaking to do. I received many bsod's and automatic reboots with no error info but it does boot. I'll try to work out which configuration is causing them. The great thing about this board is the 2 bios chips. I just pressed the bios switch and am currently running off the modded bolts one until I can find time to tweak yours. If you have any revisions feel free to post. Many Thanks!

Those may be related to the card or your install on the NVME's etc. Please test BIOS without the Hyper card installed, or we can wait and see how it works for other user too.
I used the bolts BIOS as well, only changes made were to make options visible in BIOS that you couldn't see, which I've done for 100's of users on Asus X79.
These issues are not common of a BIOS edit, usually if there is an issue it's just that you can't see the settings I made visible for you, not BSODs/reboots etc, this sounds more related to the card or your setup OS on the NVME's

@Lost_N_BIOS Can you please mod stock 4901 with bifurcation+nvme boot only? For testing purposes. Have few random BSODs on this BIOS aswell =(

@nickname_in_forum what version ASUS Hyper M.2 X16 Card do you have? (v1 or v2?)

@nickname_in_forum - @xander0d - that's to funny, you guys both have issues with the BIOS I asked to not use initially, but you wanted it used, and now you want me to do my original edit plan instead?
What gives.... had neither of you guys actually used the BIOS you asked me to edit or what?

From what I've seen on MANY X79 Asus threads on this forum, max amount of possible used NVME drives on Hyper card is 3x total, 4th will never show.
This is discussed, troubleshooted, and tried to resolve across many threads here, search and you will find, there is no resolution for this.
My assumption is board is too old to properly work, or BIOS is not modern enough to be able to support it all properly etc whatever the cause is, that's the limit.

Yes, I can redo on stock BIOS as originally intended Please wait

Wait a minute! I didn't check yet, but is 4901 BIOS one the ones that says "128GB compatible" in the change log at Asus site?
If yes, I had issues with those, on ANY Asus X79 board, stock BIOS testing, I suggest using BIOS directly before this version if this is the case here too.
* Edit - Nope, not this, I checked and 4901 doesn't have this update and is still from 2014. Probably should have ME FW and updated microcodes added to this edit at the very least
But, I have X79 ME FW update in BIOS, so you guys should do that on your end w/ ME FW Update tool, but I can do the microcodes if you guys are OK with that?

@Lost_N_BIOS Thank you. And sorry for not listening to ypur advice at first

It would be nice if you update microcodes. Thanks!

It's OK, don't worry about it, I was only giving you a hard time
Mod may be fine, it may be some stability issue you have with that BIOS? Maybe best you test stock 4901 for a few days, before you test anymore mod 4901, then at least you know if the issues you see are related to the BIOS itself, or the mods.
And yes, OK, I will update microcodes while doing the re-edit as well

V2

Zitat von Lost_N_BIOS im Beitrag #23

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It's OK, don't worry about it, I was only giving you a hard time
Mod may be fine, it may be some stability issue you have with that BIOS? Maybe best you test stock 4901 for a few days, before you test anymore mod 4901, then at least you know if the issues you see are related to the BIOS itself, or the mods.
And yes, OK, I will update microcodes while doing the re-edit as well

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@nickname_in_forum - What is V2 post about??
Yes, sorry, I guess I didn't think about that I will make you NVME mod BIOS by itself tonight, then you guys test a for a few days, if all OK, then we test/compare with birfurcation edited one

* edit - @nickname_in_forum & @xander0d - 4901 stock + NVME (proper, new/modern one) edit ONLY - http://s000.tinyupload.com/index.php?fil...742751679364475
Flash via USB Flashback ONLY, test for a while and make sure OK, if all OK then I will add bifurcation edit.

I also just noticed, that bolts BIOS is using incorrect or OLD NVME Module, so I'm not surprised you guys have random issues with it.
I don't even see how you guys were able to flash it in, it must be old USB Flashback didn't check signatures, because that has unsigned/broken signature too

Zitat von Lost_N_BIOS im Beitrag #25

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@nickname_in_forum - What is V2 post about??

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@Lost_N_BIOS all seems fine with BIOS you provided for testing. Rock solid (at least for 3days).

@Lost_N_BIOS No BSOD with BIOS you provided.

Zitat von Lost_N_BIOS im Beitrag #25

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... then you guys test a for a few days, if all OK, then we test/compare with birfurcation edited one...

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@xander0d @ nickname_in_forum - Sorry guys, I get lost in here and have to have tagged PM's disabled, so always buried and behind
BIOS #25 + Bifurcation mod - http://s000.tinyupload.com/index.php?fil...640787011050009