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If you're currently using the official Shadow application on macOS 11 Big Sur, your system may reboot infinitely after you've installed USB drivers. Your system may also start rebooting after you've updated from macOS Catalina to Big Sur. Our teams are currently working on a solution and have provided a workaround below.

 

Read this article for help with the following:

 

📌 Reminder: Common USB devices such as basic mice, keyboards, and gamepads (including PlayStation and Xbox controllers) can be used as soon as they are plugged in via USB. Only use USB Drivers for other devices, like joysticks, webcams, or external hard drives. For more information, see How to Connect a USB Device to Shadow.

 

If you need to use USB drivers on macOS Big Sur

🚨 Warning: This procedure requires the Shadow Beta application, Disk Utility, and Terminal. Beta applications are not officially supported and are intended for testing purposes.

 

Perform a clean uninstall, removing the USB drivers installed on your Mac following these instructions:

  1. Uninstall USB drivers from the Shadow app settings and turn off your Mac.

    uninstall_usb_drivers.png

  2. Turn on your Mac and immediately press and hold Command (⌘) + R to restart in macOS Recovery.
  3. Open Disk Utility then choose View > Show All Devices. Write down the name of the startup disk. Ensure the disk is mounted.
  4. Close the Disk Utility and open a Terminal from the Utilities menu.
  5. In the terminal, enter the following command, replacing <StartupDiskName> with the name of your disk from step 3:
    kmutil trigger-panic-medic --volume-root "/Volumes/<StartupDiskName>"
  6. Restart your Mac.
  7. Download the Shadow Beta application from your account page to continue.
  8. Start the Shadow Beta application and install USB drivers. You may be required to allow these drivers in your Security & Privacy preferences.

 

If you're experiencing system reboots on macOS Big Sur after installing USB drivers

As of February 4, 2021 we advise against updating macOS to Big Sur version 11 if you can avoid doing so. Our teams are working to fix the relevant USB drivers at this time. USB driver installation will be disabled on macOS Big Sur until this issue is resolved.

 

Workarounds: If your system is stuck in a reboot cycle following an update to macOS Big Sur version 11, follow this procedure:

  1. Turn on your Mac and immediately press and hold Command (⌘) + R to restart in macOS Recovery.
  2. Log in (if required).
  3. Open Disk Utility then choose View > Show All Devices. Write down the name of the startup disk. Ensure the disk is mounted.
  4. If the hard drive is encrypted, "unmount" and "mount" the drive. You'll be asked to enter your password.
  5. Close the Disk Utility and open the Terminal from the Utilities menu.
  6. Run the following command, replacing <StartupDiskName> with the name of your disk from step 3:
    rm "/Volumes/<StartupDiskName/Library/LaunchDaemons/us.electronic.eveusb.daemon.plist"
  7. Run the following command:
    reboot

Now your computer should start properly.