[Sticky] For those having problems installing the SoftRAID 6 driver

@guze 

SoftRAID should show your volume in the volumes tile. Send a support file if it does not. Installing the driver, as below, will not affect your disks/volume. You can also do this with your disks disconnected.

You need to do this, first:

https://support.apple.com/en-lk/guide/mac-help/mchl768f7291/mac
Select reduced security and enable this:
Select the “Allow user management of kernel extensions from identified developers” checkbox to allow installation of software that uses legacy kernel extensions.

Now you need to reinstall the SoftRAID driver. (Utilities menu)

After reinstalling the SoftRAID driver, (do not immediately restart) and go to System Preferences / Security to "Allow" OWC as an identified developer. now, restart