X399 Taichi 1.70 BIOS error code loop

so far I see SATA SSD as the common denominator. I'll wait with re-testing when I get my NVME ssds.

jackfrost wrote: This is happening to me as well... I have 2x NVMe, 1x SATA (all in M.2 slots). One thing that might not be clear (based on your response parsec) is that the above boot codes loop, as in they keep going repeating over and over (not once each power up). It doesn't stop on A2, it just... loops again and again, running through all of the above debug codes. Is there any BIOS update on the horizon soon? I really want to use NVMe RAID and SATA simultaneously... Thanks

So this POST loop just continues endlessly? Is there any evidence of the PC restarting, and the POST process starting over again?

I ask because a UEFI/BIOS option found in Ryzen boards, AM4 Advance Boot Training will cause the PC to restart multiple times (three by default) to run through the training three times. That may not be the case here. I don't have an X399 board, so can only speculate.

A2 is not the last SATA related POST code displayed with Ryzen boards. That would be A9, possibly followed by 99, which is PCIe related and probably related to an NVMe SSD on the PCIe buss. Did you happen to observe the POST codes shown with the 1.50 UEFI version?

IMO, at this point the other POST codes aren't related or an error, since the last one displayed is always apparently A2, before the loop begins again.

Regardless, it is clear there is a major problem with the 1.70 UEFI version for some users. There will obviously be a need for a new UEFI version, but I have no information about when that will happen.

parsec wrote: jackfrost wrote: This is happening to me as well... I have 2x NVMe, 1x SATA (all in M.2 slots). One thing that might not be clear (based on your response parsec) is that the above boot codes loop, as in they keep going repeating over and over (not once each power up). It doesn't stop on A2, it just... loops again and again, running through all of the above debug codes. Is there any BIOS update on the horizon soon? I really want to use NVMe RAID and SATA simultaneously... Thanks So this POST loop just continues endlessly? Is there any evidence of the PC restarting, and the POST process starting over again? I ask because a UEFI/BIOS option found in Ryzen boards, AM4 Advance Boot Training will cause the PC to restart multiple times (three by default) to run through the training three times. That may not be the case here. I don't have an X399 board, so can only speculate. A2 is not the last SATA related POST code displayed with Ryzen boards. That would be A9, possibly followed by 99, which is PCIe related and probably related to an NVMe SSD on the PCIe buss. Did you happen to observe the POST codes shown with the 1.50 UEFI version? IMO, at this point the other POST codes aren't related or an error, since the last one displayed is always apparently A2, before the loop begins again. Regardless, it is clear there is a major problem with the 1.70 UEFI version for some users. There will obviously be a need for a new UEFI version, but I have no information about when that will happen.

Edited by jackfrost - 24 Oct 2017 at 4:36pm

Switching the NVMe ssd in M2_3 and the SATA ssd in M2_1 does result in a bootable system with 1.70... but it seems to be somewhat unstable.

wolrah, this is a user forum and the chances of seeing an ASRock technical support person is very slim.  Here is a link to the debug codes:
http://forum.hwbot.org/showthread.php?t=16017
Those look like normal boot sequence codes.  Have you tried plugging your working W10 System SSD into one of the other M.2 sockets.  If that works, then I would suggest you plug each of your new drives into Slot-3, one at a time, and initialize them GPT and format them.  Then try all three plugged at once.  In any case please open a ticket with ASRock Support and report what is going on, so you can get ready for a RMA is needed.  Enjoy, John.