Bios upgrade causes 2nd Intel 905 PCIE NVME SSD to Vanish in EVGA Dark x299 using 7940x cpu
System has 2 Intel PCIE NVME SSD Drives.
First drive is Intel Model 900p 480gb,
Second is Intel Model 905p 960gb
The bios only sees drive one (the 900p) after bios 1.07 I believe it was which was quite a while back. The $2400 investment in these 2 drives is useless at the moment since they need to be used together for capacity , not raid.
So the problem is the 905p does not show up anymore by itself as the only PCIE card besides the GPU or with the other Intel PCIE NVME SSD DRIVE.
The 905p does work just fine in 2 other pcs running win 10 that are x299 with this processor removed and tested in each one. They are running Asus Rampage Extreme x299 motherboards and identical ram.
Both the 900 NVME and the 905 NVME work fine individually or together as 2 separate drives.
Used to able to downgrade the bios but have not been able to do that for a while now.
In the bios it shows the first NVME SSD in slow 4 at Gen 3 speed and that drive boots and works fine.
The other drive in slot 3 shows power lights but is not seen by the bios at all on any screen.
The biggest concern here is that upgrading a BIOS causes the second drive to vanish. I'd be happy if I could force the bios back down as a temporary fix but that doesnt seem possible.
System has Win 10 and the mb has been configured to use the Win 10 boot partition in the bios on the first NVME drive which works just fine. The other curiosity is that on the NVME device screen in the BIOS is shows zero drives assuming Im reading this all correctly.
System has been rock solid stable running 128gb corsair ram since it was built. This is the first problem
Verified Win 10 has the latest correct driver from Intel for this drive here:
This driver covers both
So the new bioses after 1.7 or 1.08 cause this issue, but anyone know a fix or why?
Is there microcode that a bios downgrade can't reverse/restore? Clearly there must be something like going on?
Update: Spent an hour and Flashed all the back to 1.04 and no dice. So something is being written reflashing to an earlier bios does not change.
post edited by Van007 - 2019/06/17 12:39:03