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New Asus X870E Strix board - M.2 drive disappearing

Cheairnyndahl
Level 9

Hello, just installed my new Asus X870E-E Strix motherboard, loving it so far. When I initially got in to Windows, all of my drives were present (even the new one that wasn't formatted yet was showing in Disk Management) - I updated everything in terms of latest drivers for the motherboard etc, rebooted and enabled EXPO on my RAM, set to 6000MHz with voltages set, didn't touch any other settings...

And now one of my M.2 drives is not showing up in BIOS or in Windows?  I've tried changing the BIOS setting for Bifurcation to GPU+M.2 mode, that doesn't help.  Any suggestions as to what else I can try?  I have a feeling it's related to the whole thing of the GPU slot & the M.2-2 & M.2-3 sharing bandwidth, but the drive that's in one of them is showing up while the other is not now.
I'm going to try disabling EXPO & see if that helps for some reason... wouldn't make any sense if that was it, but perhaps the BIOS version I'm on is messing something up.

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TheDeepShadow
Level 8

Hello, same issue here with my ROH Strix X870E-E

At first i thought updating the BIOS would fix this issue, so i went from 0223 to 0606 but same thing (Samsung 990Pro 4TB in M.2_3)

It happens randomly, sometimes my PC boots normally the first time, sometimes it boots directly in the BIOS and i have to restart 2 or 3 times...

My "work around" is listed in the post just above... You have the same issue I do, in that when it disappears it's my Windows drive sometimes so it boots in to bios. Doing a full power off & back on (instead of just rebooting) seems to fix it more often than not. 

Psamtik
Level 9

Looks like its still a thing in the new Beta bios. I just installed it, reset to defaults then rebooted and went back into the bios and tried DOCP, then restarted, and it did the old showing 4 of the 5 drives but showing 2 and 3 as empty on the board layout screen. Just in case, I went to windows where its was only detecting 3 like it used to. I then did a full power off and on and now it was displaying correctly and only showed 3 (1,4 and 5). All 5 showed back up again when I set ram back to auto, and put the timings back in manually. 

So for me at least, zero change, though to be honest, I am not expecting any great change to fix this now, and while I may have found a manual fix that works, I am really only checking to see if the EXPO/DOCP settings work on new bios revisions, out of curiosity.

I really wouldn't recommend this board to anyone right now, and to be honest if you want full speed ram and 4 or 5 M.2, i'd recommend the X670E-F if you want the extra M.2 slot and 1 in the x4 slot, as its a lot cheaper and works even if its lacking a couple of niceties like the digital display for error checking, the extra USB 3 header and the extra type c on the rear I/O. It does however have a 4th working M.2 that works with XMP profiles and doesn't gimp the X16 slot when using gen 4 at least, plus it has an additional 1x PCIe 3.0 slot at 7.1 audio out for those of us would use them (I have a creative X4 to cover my bases on this board, so thats 1 less type c right away, so removing one of the X870E-E's few pluses).

PhilH930
Level 9

Curious why folks with multiple M.2 drives occupy M.2_2 and M,2_3 slots - doesn't any combination of one or more in those slots reduce the PCIe to 8x?  I have mine installed as M.2_1 (Win 11), and M.2_4 and M.2_5 for other drives.  Ironically the M.2_4 and 5 slots run faster in drive tests - go figure.  All drives 990 pros. 

I also switched to this set up and get faster synthetic benchies too, and never have a drive dissapear.  I did have it happen once when my drive was in M2_2.  Now I get x16 on my gpu and faster drives that don't dissapear.

Looks like I forgot to mention it in the very first post of this long ass thread, but, at the time of posting I had 5 drives & was trying to use a 6th which is why I bought this board to begin with. 

Now, thanks to all these issues apparently killing on Team Force 2TB drive, I'm back down to 5.

But having your gpu 5% slower is preferred to having no ability to use better heatsinks on m.2 4&5 - for me they're buried under my 4090 and even the best low profile m.2 heatsink I've found so far doesn't come close to the better ones both on the motherboard & aftermarket wise. 

adam12345
Level 8

for me it seems that the only issue was with m2_3

m2_2 and m2_1 together work fine

it was working fine for a few weeks and it only happened after i installed my heatsink  on it i had to remove the builtin cause of my aio

anyway i never disabled  expo and never had issue with expo using bios 0706

 

It’s bizarre for me as well. I have X870E Hero and been running it with 7950X3D for some time and no issues with not seeing M2_1 or M2_2. Today I swapped CPU to 9800X3D (the former is going to another build) and randomly M2_2 goes away in BIOS layout screen. And that’s on older and newest 1001/1002 BIOS versions. 

something is not right. 

9800X3D — X870E Hero — Corsair Dominator Titanium 64GB (2x32G 6200MT/s @ 6600) — MBA 7900XTX — 32" 4K PG32UCDP W-OLED — 2x2T 990 Pro NVMe — Corsair RX Link (AIO+Fans) — APNX V1 Case — Asus ROG Loki 1200W PSU

Perhaps it's a single CCD cpu issue for the effected boards? Interesting if I actually upgrade to the 9950X3D before I RMA this board I'll report on that. 

Interesting how I’ve been rocking 7950X3D on both x670e gene and x870e hero without issues.

some coincidence that the moment a 9000 chip replaces it, drives vanish.  

9800X3D — X870E Hero — Corsair Dominator Titanium 64GB (2x32G 6200MT/s @ 6600) — MBA 7900XTX — 32" 4K PG32UCDP W-OLED — 2x2T 990 Pro NVMe — Corsair RX Link (AIO+Fans) — APNX V1 Case — Asus ROG Loki 1200W PSU