To ensure that everything goes smoothly, we'll take the extra step of deleting your existing partition before installing macOS. Once your installation files have been copied, it's time to install macOS from scratch. The current release of Xcode is available as a free download from the Mac App Store. Once you hit Enter, you'll need to enter your admin password to approve the command, and then hit "Y" on your keyboard to confirm that you're OK with the contents of the USB drive being overwritten. Here's another example that creates a macOS High Sierra install USB on a drive named "MacOS Installer": sudo /Applications/ Install\ macOS\ High\ Sierra.app/ Contents/Resources/createinstallmedia -volume /Volumes/MacOS\ InstallerĬommand to list all connected volumes, which will include your USB installation medium in case you need to check the label. Click Multibeast - High Sierra 10.2.0 Click Download Now in the upper-right corner of the page. For example, "Install macOS High Sierra.app" would become Install\ macOS\ High\ Sierra.app This program, which is hosted on the same site as Unibeast, will allow you to install drivers so that you can use things like your PC's speakers, the Internet, and so on: Double-click the Downloads tab again. Your Mac also needs at least 4GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier. If you're using one of these computers with OS X Mavericks or later, you can install macOS Catalina. Be aware that any spaces will need to be preceded by a backslash. You can install macOS Catalina on any of these Mac models. ![]() You can change various parts of this command to suit your own circumstances, with the main one being the name of the installer. System font Document-based app support Downloadable. Sudo /Applications/ Install\ macOS\ Big\ Sur.app/ Contents/Resources/createinstallmedia -volume /Volumes/macos_installer Additional fonts are available for download on each platform or through document-based apps. Once macOS loads (You might need to select a language first.), click on Utilities > Disk Utility. Release when you see a list of bootable volumes, select the USB stick that you created, and click on the upward-pointing arrow. You can find out which Mac you have by clicking on the Apple logo in the top-left corner and selecting "About This Mac" to see the name and year of release. Intel-powered Mac: Press and hold Option (Alt) as you turn your Mac on. If you're not sure what your Mac came with, head to Apple Support and search for your exact model. Your Mac's "earliest" supported version of macOS is the one that it came with. ![]() Older versions were written for Intel chips, which use the x86_64 instruction set, while the newer Apple Silicon chips use the ARM instruction set. It's common knowledge that new macOS releases often drop support for older hardware, but the same is true for newer Mac models and older software, too.įor example, you cannot install any version of macOS prior to Big Sur (released in 2020) on a Mac with an Apple Silicon chip, including the M1. It's important to understand that not all versions of macOS (or Mac OS X) work with all hardware configurations. ![]() While the process is pretty straightforward, getting your hands on older releases of macOS isn't so easy.
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