If you don't want to mess with Terminal, Tim Perfitt of TwoCanoes software made a free Recovery Selector utility that'll do it for you.Įither way, restart, and it should start in Internet Recovery mode without any keys. You can do this by hand in the Terminal utility, with the command: sudo usr/sbin/nvram internet-recovery-mode=RecoveryModeNetworkĮnter your admin password when prompted (it won't echo). (Normally, you could hold Option at startup, and then select it but having Shift stuck down seems to prevent this.) Option 2: Select recovery mode with an NVRAM setting When that's finished, select that drive in System Preferences -> Startup Disk, and restart. The boot sequence will take you into the Mac Recovery Utilities menu Select the Disk Utilities option from the menu Select the NEW Drive in the list to the left and click Verify Disk. In summary, download the macOS installer application from the Mac App Store, plug in a flash drive that can be erased (because it will be), and run something like: sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolumeĮnter your admin password when prompted (it won't echo), and follow the prompts. See Apple Support Document HT201372: "How to create a bootable installer for macOS" for full instructions. So I recommend at least starting the first option. The second option is probably simplest (if nothing goes wrong), but if it doesn't work, having an installer drive (first option) will give you a lot more options. Select Restart from the drop-down menu.I have some possible solutions.Click on the Apple icon in the upper left corner of the screen.Connect your Mac to the internet via Wi-Fi or Ethernet.Remember, back up your Mac before performing this step. You'll need to erase your hard drive before re-installing Catalina. If you don't feel comfortable making changes to your Mac with Terminal, you can create a bootable disk using the DiskMaker X program. Note: Making a bootable installer requires the use of Terminal. In all versions of OS X you can find Disk Utility in the Utilities menu at the top in 10.7, its also in the main list in the center of the screen. How to make a bootable macOS Catalina installer drive in case you want to downgrade from macOS Big Sur.You'll need a copy of macOS Catalina on an external hard drive for the easiest, fastest way to install the downgrade.įollow the steps linked below to make a bootable installer drive for macOS Catalina Step 2: Create a bootable drive of macOS Catalinaīefore you downgrade your Mac and erase Big Sur from your computer, download macOS Catalina (opens in new tab) from the Mac App Store.
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