If you have any questions or problems with the process, feel free to ask below or send me a PM, I will try to respond as best I can. Note that you do not have to run the nvram command in normal recovery mode, since you did it before, just like partitioning your disk (unless you want a partition for every beta). You createinstallmedia, micropatch.sh it, set-vars.sh booted into the installer, install the new beta on top of the old one, and patch-kexts.sh if something doesn’t work. Updating is mostly the same as installing Big Sur. Once that finishes reboot and enjoy MacOS Big Sur on your unsupported Mac! Updating Now (for both) if you have a 2011 MacBook you need to add -2011 (or -2011-no-wifi if you upgraded your WiFi card) or -all if you have a 2010 or older Mac.Īlso add (if you did a clean install) the name of your Big Sur volume prefixed with /Volumes/ Or (if you did a clean install) boot back into the USB Installer and type: /Volumes/Image\ Volume/patch-kexts.sh To fix this (if you updated) open terminal and type: /Volumes/Install\ macOS\ Big\ Sur\ Beta/patch-kexts.sh If you start using Big Sur now, you will either be perfectly fine, or WiFi won’t work and possibly several other things too (if everything does work, which means you have a Late 2013 iMac or upgraded your WiFi card). Once the installer finished your will either be told to sign in or setup macOS (depending on whether you updated or did a clean install). This will take a really long time (anything from an hour to three) so feel free to find something else to do. Now, quit Terminal and select Reinstall MacOS from the Recovery Assistant and follow the prompts until it starts installing Big Sur. Once you are done with that, you can restart your Mac again into the USB Installer by holding down option during boot and selecting Install macOS Big Sur Beta.Īfter it boots into the installer, open Terminal (again in the Utilities menu) and run: /Volumes/Image\ Volume/set-vars.sh. ![]() If you plan to do any partitioning to your drive, right now would be a good time, since doing it in a stable recovery environment is much faster and safer than in full MacOS or Big Sur Beta. Once you’re there, open Terminal (in the Utilities menu) and run: nvram boot-args=-no_compact_check. Now you can quit terminal and restart into normal recovery mode (not the disk you just created) by holding down CMD-R the moment your Mac boots up. Once that finishes (don’t be surprised if it takes a while), you can run: Downloads/big-sur-micropatcher-main/micropatcher.sh. Press y and enter to erase all data on the drive so it can be replaced with the Big Sur installer. Sudo /Applications/Install\ macOS\ Big\ Sur\ Beta.app/Contents/Resources/createinstallmedia -volume (make sure to put a space at the end)Īnd then drag in your USB Drive (should be on your desktop) and hit enter.Īfter that, a prompt will come up and ask if you would like to erase your drive and install the installer onto it. (Links above)Īfter you download and run the Install Assistant (Install macOS Big Sur Beta should appear in your applications folder) and extract the Micropatcher (Leave it in your downloads folder), you are ready to make your USB Disk into an installer. Next, you need to download the Installer and Micropatcher. (This shouldn’t be required if you are updating from Catalina, but better safe than sorry) Installing Big Surįirst of all, you should make a Time Machine backup of your current OS if you plan to update from an older MacOS version to Big Sur. Now that that’s out of the way, let’s get started. FireVault also has many issues that interfere with installation, so you probably will have to turn it off. To update you can’t use Software Update in System Preferences, you have run the install process all over again on top of your current Big Sur installation.
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