I installed the SN350 2TB into my Dell 5540 laptop, recognized immediately and it has worked fine. Makes me speculate about issues as my laptop has only one M.2 slot and my rig is PCIe 3.0 so no point wasting cash on the latest hi-end SSD.
I thought I was going crazy after finding this thread! I really hope I can return the product, I purchased it on Saturday from EBuyer not directly from WD so Iām not sure if I will get a refund 
What a joke!!!
I have bunch of 850sn 1TB most work fine but my system one when I changed mobo from x570 to asrock z790 PG mighting I seen this issue few time on reboot
Now I had one strange BSOD and I am not sure that is the issue, wd dashboard tool can not pass SMART checks, even there are no smart errors looking at SMART stats
After months of back and forth between WD, MSI and me, the fix is available.
I spent so much time to provide my support for this dev but now 624361WD firmware for SN850x 4 TB is available and works like a charm with MSI X570 GAMING PLUS.
Hope the issue is now solved for everyone, have a great day !
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I have this issue
SN850X is not discoverable in the bios for asus rog strix b550-I gaming
any ideas as to how to fix it? I read all of the comments here but did not see a solution specific to this motherboard
Are you have latest bios Version 3402?
Try unplug all SATA drives and try SSD in all 3 M.2. slots
Hello !
I just bought a SSD NVME SN850X with heatsink because after some searches, It should works but it doesnāt. I searched all the internet and in my BIOS but nothing got successful. Maybe because of my general but not precise knowledge of computers.
I want to use the SN850X as data storage but if the solution is to put windows on it, Iām okay with that (but I didnāt find it when I tried to install a new windows 10 Pro).
I never used M.2 SSD before. There is a led on the SSD but it doesnāt switch on. An IT repair shop tested it and told me that there is no problem with it.
Should be in BIOS an option about M2 drives ? I found nothing. I also changed BIOS version multiple times but without success. Even with a P43 version found on this forum.
Is it possible that there is issue with the MOBO ? Because my GPU is at X8 and not X16 PCIE lanes in the first slot. And maybe the SSD ask to much power than the Mobo can provide to it ?
My computer is composed of :
MSI X99A RAIDER
INTEL CPU I7-5820K
GSKILL DDR4 16GB (4*4) F4-2666C15Q-16GRR
MSI GTX 970 GAMING 4G before and now a Gigabyte 7800XT 16Go
WD WD1003FZEX 1T BLACK (Data)
CRUCIAL SSD BX100 250GB SATA2.5ā 7MM-CT250BX100SSD1 (Windows 10 Pro)
MSI ATX 1000W - 80+ Gold FM - MPG A1000G PCIE5
Thank you for any help anyone could provide.
Try to unplug all SATA devices and reset bios
Iām in the last version of the BIOS (the Beta one) FYI. Before telling me to try others versions, I already tried this idea.
Last friday, the SSD got alive once with no problem with a reboot. I could use it and copy. But a cold boot stopped the miracle.
I tried what you suggest but it didnāt worked.
SSD have 620361WD firmware?
Send it back, buy another brand! The problem exists for 3 years now!
I donāt know what firmware its got.
During the miracle I did an update but the problem existed before soā¦
Where can I download the firmware I want ? I found nothing on internet !
When the firmware you mentionned have been released ?
I think I will send it back, joker, yes. Iām thinking like you right now.
But I donāt know if I really can take an high-end NVMe because of my Mobo and new M.2 firmware port and hardware updates during the years.
Kingston Fury works without any issues and so did samsung!
This device is ā ā ā ā and WD does not care to solve the problem!
Okay
I was thinking about Crucialā¦
You are speaking about an NVMe on X99A Raider or at least a X99 shipset ?
No, I own a X570 Board, but look at this thread how many people having issues with this drive. All other drives I owend worked out of the box.
Crucial is fine, Samsung too and also not a single problem with Kingstonā¦
This thread is 3 years old, and they were not able to fix the detection problem.
Reading this thread tells me that using 3rd or 4th M.2 slots might discover that the slot is for SATA products and that they are not provisioned with PCIe lanes
I think there is A LOT more at play here.
B450, B550 and X570 motherboards are now known to have some wild issues.
I have the Gigabyte X570 Aorus Master. The BIOS flash out of no where died and cannot use dual BIOS mode anymore. System is now up and running in single BIOS mode but my SN850 1TB non RGB is not so good.
Barebone system now, win10 on HDD, BIOS updated and only installed drivers and Dashboard. I got to test the SN850 on the short diagnostics and it passed. Since then I cannot run the short or extended and cannot run diagnostics in BIOS. The only thing I can think of is the firmware update messed it up. But I am not entirely sure. I cannot remember if I ran the diagnostics successfully before or after the firmware update.
I do have a Samsung 980 that tests good in BIOS. If the SN850 is on the M.1 connected to the CPU it locked up the system. If the SN850 is on M.2 or M.3 which is connected to the chipset I get test failed.
I am not a computer scientist but I do have extensive knowledge and background. But something is a miss both with the mentioned chipsets and the SN850 line. I have 2 PSUs, 2 CPUS, 2 sets of memory, 2 graphics cards and they all produce the same results so it is not that hardware. I also have 3 SSD drives and 3 HDD drives that were on the system when the BIOS kicked it. NOTHING is damaged. Only the SN850 became problematic when I started to run diagnostics to ensure it was ok. Again, it operates fine but I canāt run diagnostics so how the heck can I trust it as a system drive?
MVMe WD_BLACK SN850X not Identified by BIOS solved.
Due to the incompatible list provided by WD, will be impossible to recognize by the BIOS (ASUS X99E WS)on several motherboards.
I ordered an ASUS HYPER M.2 X16 Gen 4 Card and this solved my problem.
Even without enabling the BIOS the HYPER settings when I started my PC to my surprise the BIOS identified immediately the WD_BLACK SN850 NVMe SSD.
Then install new Windows 10 on it and recover the entire PC with Acronis True Image for Western Digital.
For me works in this way. I hope that this helps someone because I spent several hours on the internet trying to find a solution for it and nothing helped me with this before, no settings on BIOS, no BIOS update, etc.
Now is the time to see if the RW speed rate for this NVMe is really good.
Thanks all and have a good day.
So I have a MSI X570 Gaming Plus with a WD_BLACK SN850X 2TB seated in M2_2 been working fine for a couple years but my Samsung Sata SSD drive died so decided to replace with WD_BLACK SN850X 4TB.
Popped it into M2_1 and didnāt recognise so swapped them around and it was fine in M2_2 but then my old one wouldnāt detect in M2_1 so windows wouldnāt boot.
So long story short nothing worked then I saw about the firmware update above - swapped them again booted into windows installed Western Digital Dashboard - updated firmware on M.2 drive it could see in M2_2 - turned it off and popped it into the M2_1 slot and hey presto working in both raid and ACHI boot modes and fine with other one in M2_2 and two HDD in Sata 5/6.
So seems like a firmware issue with WD.
Some AMD rigs are best using one m.2 device., there are usb boxes for m.2 cheap now
