It is a general change introduced in macOS 10.13 High Sierra, and will affect any third-party (i.e. If you have already installed the driver on an earlier version of macOS and upgraded to macOS 11 Big Sur, you should not need to enable the driver. This behavior will only occur when installing a MOTU driver for the first time on macOS 11 Big Sur.To display the Allow button, run the installer for the MOTU driver again. The Allow button will disappear 30 minutes after installation.In the General section, click the Allow button.After restarting, open System Preferences.Download and install the very latest installer for your MOTU interface.Option 2: Download the macOS installer via terminal.

The installer will be in your Applications folder. Quit the installer if it opens automatically after downloading. To enable the MOTU drivers, follow these steps: Option 1: Download the macOS installer from the Mac App Store. If your MOTU interface is not showing up in Audio MIDI Setup, MOTU Audio Setup, MOTU Discovery, or your DAW on macOS 11 Big Sur, you might need to enable the driver in your System Preferences. It clearly isn't.Due to the updated security architecture introduced since macOS 10.13 High Sierra, the system extensions for all newly-installed third-party software will automatically be blocked from running. I literally have to relink every video file manually every time it opens and that's in the very latest update to 18 and specific mention this exact issue has been fixed in the notes on the App Store. I even tried ditching iMovie and using Resolve but it has permanent issues keeping folders of video files linked between opening so I can't have a nice portable library like I can with iMovie. This, and the fact Big Sur is much smoother OS than Catalina is why I'm keen to try and get the latest release of Big Sur working on the Mac Pro because it has way more power for editing and encoding than the Mac Mini. The problem is, I sometimes use iMovie and without realising it, once I open a shared iMovie Library made in the last version for Catalina in the current version for Big Sur, it renders the entire iMovie Library unreadable under Catalina because it claims it was created in a newer version and can't be opened now.

I run Pro Tools and loads of audio plug-ins under Catalina on my Mac Pro.

The OS came out a little late, it seemed, in November 2020 long after Apple of its other major operating systems following its September. Patched Sur works flawlessly on my Mac Mini. macOS Big Sur is here, and you can download it now. Please don't direct me to some long thread with even more blather and no download link I've read all the OpenCore pages thoroughly before posting this. I tried Patched Sur, which worked fine on my 2012 Mac Mini, but it recommended this apparent vapourware at the final stage when I tried it on my Mac Pro. Is a sea of programmer orientated blather with no links of any use anywhere.

Mac big sur installer