Start the Mac and hold down the option key. Insert the flash drive in a USB port on your Mac. How do I Install OSX from USB on New Hard Drive? The file or drive must support Mac OS Extended and have at least 14GB of available storage. To install macOS on these computers, youll need a flash drive that supports USBC or a USB hub or adapter. Using an external drive, you can install or reinstall the Mac operating system on a supported device. Select your flash drive from the dropdown menu.Ĭlick “Create Installer.” Can you Install MacOS from a Flash Drive? Open Disc Creator and click the “Select the OS X Installer” button. How do I Burn a Mac to a USB?ĭownload the macOS Sierra installer and Disk Creator. Apple recommends only system administrators follow these steps since a bootable installer isnt necessary to update or even reinstall macOS. Use an external drive or USB to install a fresh copy of macOS. Select and copy the following: sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia volume /Volumes/Untitled. Launch Terminal /Applications/Utilities/Terminal. How do I Make a Bootable Mac Big Sur Installer? When the macOS installer opens, follow the onscreen instructions.
Select the volume containing the bootable installer, then click Continue. Turn on your Mac and continue to hold the power button until you see the startup options window, which shows your bootable volumes. Rightclick the installer and choose Show Package Contents. At this point you can either create the installation disc, or you can copy the installer to a backup location so you can create the installation disc at a later point. Go to the Applications folder and locate the Install Mac OS X Lion package. How to Create an OS X Lion Installation Disc Within a few seconds, a macOS Utility screen should pop up. Hold down Command ⌘ + R to boot into recovery mode.Ĭonnect your macOS High Sierra bootable USB. How do I Install MacOS High Sierra from USB?Ĭlick on Startup Disk and select the installer. Go to Applications > Utilities > Terminal.Įnter the command sudo /Applications/Install\ macOS\ Mojave.Ĭonfirm the formatting of the USB drive. Select the volume for your bootable USB drive, then click the up arrow or press Return. Hold the Option key as you do so, then release the Option key when a dark screen appears displaying your bootable volumes.
Insert the USB drive and power up the machine. Once you have your bootable installer ready, its time to move to the next step. On a MacBook or Mac desktop computer, download the version of macOS that suits your needs.
How to Install MacOS from a USB | TechRadarĭownload macOS.
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