So we need to cheat system that they’re still valid. This happens because certificates of older installers are obsolete. Run terminal and type: date 0712122317įormat for this command is HH]MM Most programs are single icons (iTunes, Firefox), while others contain one or more folders full. You need to turn back your clock (for installation time only). Be default, Mac OS X software is stored in the Applications folder on your hard drive.
HOW TO DOWNGRADE MAC OS X 10.10 TO 10.8 INSTALL
This copy of the Install macOS application is damaged, and can’t be used to install macOS Mac OS installer If you’re having troubles with message like this: Put your drive into MacBook, press option/alt key, turn it on and select correct device.
Of course change paths according to your setup 🙂 Booting up If installer is an app file simply type in your terminal: sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume -applicationpath /Applications/Install\ macOS\ Mojave.app Mount downloaded OS image (it’s often as easy as double click on a file). Use this command to unmount drive: diskutil unmountdisk /dev/diskNĪnd finally destroy the partition table: sudo gpt destroy /dev/diskNĪfter this operation go to Disk Utility (command + space to search) and format your drive. If for some reason you can’t do this (access denied etc.) you can totally erase your stick using terminal.įind your drive (by capacity or name it will be something like /dev/disk2 depending on your machine): diskutil list If you find something to hard please inform me in a comment section below article 🙂 Links:įormat your pendrive to MacOS Extended format: Mac OS Disk Utility – formatting USB drive Problems with formatting? We’ll be covering these workarounds in the next section, so avoid the temptation to download this version of.
HOW TO DOWNGRADE MAC OS X 10.10 TO 10.8 HOW TO
How to find and install older macOS/OS X versions? If you want to download installer images and downgrade your operating system here you can find some instructions.īelow the links list you can find short “cut to the chase” instruction how to create bootable usb drive and install/downgrade operating system on your MacBook. If you want to downgrade to a version of macOS that you didn’t originally download from the App Store, or a version of macOS that was never available via the App Store (such as Mac OS X Snow Leopard) then there are some workarounds.
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