B450 Pro4 WD Black 850X 1TB not detected

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   System Config:
ASRock B450 Pro4
AMD Ryzen 5 3400G
ADATA XPG Gammix D30 8GB X 4
Crucial MX 500 256GB
WD Blue HDD 4TB
WD Blue HDD 2TB
Corsair CX450 PSU
Corsair Spec Delta

the system is not detecting WD Black 850X 1TB in either of the m.2 slots.

there are no PCIe devices connected. Shared SATA ports are free.

asrock website says this SSD is not compatible. www.asrock.com/support/qa/Technical%20NNotes%20-%20Storage%20Device%20Compatibility.pdf

I WANT TO KNOW IF ASROCK HAS ADDED SUPPORT FOR THIS SSD IN THE BETA BIOS AVAILABLE FOR THIS MOTHERBOARD.

I have not updated BIOS after ver5 as it is working fine. can i update to L8.02 (the stable / final one) without any issue?

thanks.

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manushya Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 01 Mar 2025 Status: Offline Points: 80	Post Options Post Reply Quote manushya Report Post Thanks(0) Quote Reply Topic: B450 Pro4 WD Black 850X 1TB not detected Posted: 14 hours 49 minutes ago at 2:31pm
	System Config: ASRock B450 Pro4 AMD Ryzen 5 3400G ADATA XPG Gammix D30 8GB X 4 Crucial MX 500 256GB WD Blue HDD 4TB WD Blue HDD 2TB Corsair CX450 PSU Corsair Spec Delta the system is not detecting WD Black 850X 1TB in either of the m.2 slots. there are no PCIe devices connected. Shared SATA ports are free. asrock website says this SSD is not compatible. www.asrock.com/support/qa/Technical%20NNotes%20-%20Storage%20Device%20Compatibility.pdf I WANT TO KNOW IF ASROCK HAS ADDED SUPPORT FOR THIS SSD IN THE BETA BIOS AVAILABLE FOR THIS MOTHERBOARD. I have not updated BIOS after ver5 as it is working fine. can i update to L8.02 (the stable / final one) without any issue? thanks.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 34743	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 13 hours 28 minutes ago at 3:52pm
	You can updated to L8.02 yes, it should work just fine though I would update to 10.44 beta so you get the benefit of the updated secure boot certificates. Your 850x will need to go in the top (ultra M.2) slot. Your operating system must be installed in GPT mode (UEFI mode) or the drive will not be detected. Before updating BIOS or anything else I would recommend you try the following: 1. Disconnect all drives from the system. 2. Install only the 850x in M.2 slot 1 (ultra M.2) 3. Make sure CSM is set to disabled in your BIOS 4. Press F12 during the POST process to pull up your boot menu and see if the drive is listed. If your operating system is installed on an MBR partition (CSM enabled) you will need to convert the boot drive to GPT or reinstall the OS on a drive formatted to GPT. There are guides on how to convert on youtube/google with a bit of a search. As far as I know (I do not work for/speak for ASRock) the 850x should work in theory as it claims to be backward compatible with PCIe Gen3. Looking on various tech forums however it seems fairly common for this drive to not be detected on 400 series AM4 boards. I have seen a few accounts where users were forced to purchase a PCIe M.2 adapter card and it worked when connected to that. If none of this helps then you can try opening a support ticket with ASRock: https://tw.asrock.com/events/tsd.asp They may not be able to help though if the drive is considered unsupported. I hope this helps.