https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 18 Jul 2026 16:43:45 +0000 Tue, 26 May 2026 02:02:15 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113520 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201553&title=z390-pro-4-m-2-drive-not-showing-in-bios#201553 Author: Xaltar
Subject: 113520
Posted: 26 May 2026 at 2:02am

Glad I could be of help. You know where to come when you need help again ]]> Tue, 26 May 2026 02:02:15 +0000 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201553&title=z390-pro-4-m-2-drive-not-showing-in-bios#201553 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201552&title=z390-pro-4-m-2-drive-not-showing-in-bios#201552 Author: oldretiredchief
Subject: 113520
Posted: 26 May 2026 at 1:08am

Hi
I did not flash the BIOS and all is running fine
Thanks for the help. Take care
Chief Vic ]]> Tue, 26 May 2026 01:08:25 +0000 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201552&title=z390-pro-4-m-2-drive-not-showing-in-bios#201552 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201532&title=z390-pro-4-m-2-drive-not-showing-in-bios#201532 Author: Xaltar
Subject: 113520
Posted: 22 May 2026 at 1:42pm

Awesome, glad to hear it

I tend to update my BIOS only when I actually need to, upgrading my CPU to a new
one that requires it, critical security fixes etc. If it works, leave it be.]]> Fri, 22 May 2026 13:42:19 +0000 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201532&title=z390-pro-4-m-2-drive-not-showing-in-bios#201532 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201528&title=z390-pro-4-m-2-drive-not-showing-in-bios#201528 Author: oldretiredchief
Subject: 113520
Posted: 22 May 2026 at 4:59am

Hello
I moved the M.2 to slot one. It did not recognize right away as I have read BUT is is visible now in disk management and I have copied files to it, so I guess I am NOT going to flash the BIOS, unless you all think it is a good idea.
Cheers
Chief Vic https://forum.asrock.com/smileys/smiley17.gif]]> Fri, 22 May 2026 04:59:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201528&title=z390-pro-4-m-2-drive-not-showing-in-bios#201528 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201521&title=z390-pro-4-m-2-drive-not-showing-in-bios#201521 Author: oldretiredchief
Subject: 113520
Posted: 21 May 2026 at 11:35pm

Thanks   - Messing with the bios is always scary.
I have placed the M.2 in the lower slot and will move it to the top slot and see if it is recognized.
It is formatted and has been recognized in an external M2 holder.
Thanks again
Will let you know how it went.
ChiefVic ]]> Thu, 21 May 2026 23:35:52 +0000 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201521&title=z390-pro-4-m-2-drive-not-showing-in-bios#201521 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201520&title=z390-pro-4-m-2-drive-not-showing-in-bios#201520 Author: Xaltar
Subject: 113520
Posted: 21 May 2026 at 1:54pm

Hi Vic, it's highly unlikely that your issue is BIOS version related but you can
find all the available BIOS versions for your board here:
https://www.asrock.com/MB/Intel/Z390%20Pro4/#BIOS

Before you go down the update route however try the following:

1. Make sure the M.2 drive is properly seated in it's socket.

2. Go into windows (assuming you have another boot drive installed) and check
in "Disk Management" to see if your drive is showing there.
a. Open Disk Management: Right-click the Start button (or press Windows Key + X)
and select Disk Management.
b. Initialize the Drive (if new): If the drive is brand new, an "Initialize
Disk" window will automatically pop up. Select GPT (GUID Partition Table) as it
is the modern standard, and click OK.
c. Create a Simple Volume: Look at the bottom of the window for your new disk.
It will be marked with a black bar indicating "Unallocated" space. Right-click
this unallocated space and choose New Simple Volume.
d. Specify Volume Size: The wizard will guide you; click Next. You can specify
the size in megabytes (MB) or leave it at the maximum default to use the entire
drive.
e. Assign a Drive Letter: Click Next, and assign your preferred letter (e.g.,
D, E, or F) to the drive.
f. Format the Drive: Select NTFS as the File System, leave the Allocation unit
size to Default, and give the drive a name in the "Volume label" box (e.g.,
"Media Drive"). Ensure Perform a quick format is checked.
g. Finish: Click Next and then Finish. The status will change to Formatting,
and it will then be accessible in File Explorer.

3. If it is the only M.2 drive in your system make sure you install it in the
top slot. The bottom slot shares resources with some of your SATA ports so if
you have SATA drives connected it can conflict and not show up in BIOS/the OS.

4. Under "Boot options" in your BIOS make sure CSM is set to disabled. Most NVME
drives require this setting to be disabled. CSM = Compatibility Support Module
and it exists for old, legacy hardware. Almost no one uses any hardware that
needs it anymore.

Good luck.]]> Thu, 21 May 2026 13:54:22 +0000 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201520&title=z390-pro-4-m-2-drive-not-showing-in-bios#201520 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201518&title=z390-pro-4-m-2-drive-not-showing-in-bios#201518 Author: oldretiredchief
Subject: 113520
Posted: 21 May 2026 at 10:35am

The reason I am asking this is because the Z390 Pro 4 does not see
The M.2 drive i installed.
Maybe there is just a setting to change and I do not have to risk bricking my MB with a flash.
Thanks
Vic ]]> Thu, 21 May 2026 10:35:48 +0000 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201518&title=z390-pro-4-m-2-drive-not-showing-in-bios#201518 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201517&title=z390-pro-4-m-2-drive-not-showing-in-bios#201517 Author: oldretiredchief
Subject: 113520
Posted: 21 May 2026 at 10:27am

Hi Am new here
I have been unable to find a URL with an
Z390 Pro 4 mother board bios update.
I have looked for hours Thanks Vic ]]> Thu, 21 May 2026 10:27:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201517&title=z390-pro-4-m-2-drive-not-showing-in-bios#201517 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201516&title=z390-pro-4-m-2-drive-not-showing-in-bios#201516 Author: oldretiredchief
Subject: 113520
Posted: 21 May 2026 at 10:25am

Hi
I have searched the net for hours trying to find a bios update for
Z390 Pro 4
Thanks
Chief Vic ]]> Thu, 21 May 2026 10:25:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=113520&PID=201516&title=z390-pro-4-m-2-drive-not-showing-in-bios#201516