This is not a driver issue, the driver is loading. Note that the volume has a disk identifier of disk7. That means SoftRAID published it.

It appears that when MacOS attempted to auto repair some directory damage it failed and left the volume unmountable.

Do you have access to Disk Warrior? DW is the best tool for rebuilding directories.

I'm struggling get our disk mounting. It work perfectly till we entered a serial number. I worked with Catalina, but I cleaned install Big-sur, run b48 but I still can't mount. I approve all the setting and security, including full disk access. Here is the driver list install

Avigails-iMac ~ %  ls -als /Library/Extensions                        

total 0

0 drwxr-xr-x  10 root  wheel   320 Jan 19 01:37 .

0 drwxr-xr-x  64 root  wheel  2048 Jan 19 00:37 ..

0 drwxr-xr-x   3 root  wheel    96 Jan  1  2020 HighPointIOP.kext

0 drwxr-xr-x   3 root  wheel    96 Jan  1  2020 HighPointRR.kext

0 drwxr-xr-x@  3 root  wheel    96 Jan 19 01:37 OWC_SATA_Command.kext

0 drwxr-xr-x@  3 root  wheel    96 Jan 19 01:37 OWC_SCSI_Device.kext

0 drwxr-xr-x@  3 root  wheel    96 Jan 19 01:37 OWC_SCSI_Device_0E.kext

0 drwxr-xr-x@  3 root  wheel    96 Jan 19 01:37 OWC_SMART_Library.plugin

0 drwxr-xr-x   3 root  wheel    96 Sep 25 13:44 SiLabsUSBDriver64.kext

0 drwxr-xr-x@  3 root  wheel    96 Jan 19 01:37 SoftRAID.kext

I tried to reinstall soft raid, and the drivers many times, and also reverting to b43, but no matter what I do, the disk is not mounting. 

Please help, we are trying to figure it out for 2 days. 

Thanks, 

Ok, this seemed to work (driver loads, drives mount under b48) after allowing OWC in Security & Privacy, although no dialog came up for Systems Preferences during the installation. I can see this causing confusion for others as it did for me, so maybe you could work with Apple to make this more apparent. 

I think there is a different issue going on. We worked around the issue causing the driver not to load, and b48 ought to be OK. I can try researching this more, but I see no reason for there to be a difference.

Try a "uninstall SoftRAID" from utilities menu. Then run SoftRAID again. there ought to be a dialog box asking you to go to System Preferences, or "OK". OK is totally the wrong answer! Go to System Prefs/Security, and allow OWC. That box should pop up.

In the meantime, are you aware of the following post from another SoftRAID developer?

https://srforums.wpengine.com/forum/postid/6151/

This seems like the core issue at least for something that is very similar to what I'm seeing (b43 work for me but b47 & b48 do not)

Something is preventing mac OS from loading the SoftRAID driver into the "extensions cache". That is the root cause of this. I can't find the solution yet is the problem.

With beta 48, lets attempt one more try with this:

Uninstall SoftRAID from utilities menu.

Restart, run SoftRAID, and reinstall the driver. Does this help?

Can you save your /Library/Extensions folder to a dmg? I want to test this. Let me know when you have it.

I did all of these steps and my disks still do not mount. 

Open the folder at /Library/Extensions. Just delete them. Then keep on with the steps.