#How to boot mac from usb flash drive install
macOS users can also install the OS onto a USB drive and work with the same installation that’s on your internal (and faster) drive. Linux users know that booting from a USB drive is a useful way to get into the OS. There are several programs you can use, for creating a bootable USB flash drive, available for different platforms, but most of them are complex, and if not that, you will face a hard time dealing with. For all earlier versions of macOS, launch the App Store on your Mac, and search for the macOS version you want (this option is only available when running macOS High Sierra. If youre currently running macOS Mojave, click this link to find the Mojave installer in the App Store.
#How to boot mac from usb flash drive how to
In short, we don’t recommend it, and it’s likely not supported. Creating a bootable USB flash drive, CD or DVD is the maiden step to give new life to your existing or brand new PC with a new operating system. Step 1 How to create a bootable USB drive. We also don’t know whether you’ll experience issues if you look to install an older OS you don’t own. Though, if your Mac is based on Apple Silicon, you may find incompatibilities. In theory, there’s no reason why you couldn’t boot an older version of macOS, and Apple does offer ways to install older versions on a USB. Can I boot older versions of macOS from a USB drive? Our testing gave us no issues when using a USB 2.0 to USB-C connector, so you’re able to press your older USB drives into service.
Am I able to use a USB connection other than USB-C? We recommend 16GB to give yourself enough “wiggle room” when it comes to the installation process. As such, you’ll need a large enough USB drive to store Big Sur. In our experience, you will not be able to do this. Can I split an installation across multiple USB drives? Disk operations on the boot drive can be performed safely from a USB stick as well. All you need to do is format the drive with a GUID partition (default HFS+ formatting), install OS X on the drive, then hold the ALT key when booting to pick. You can now run the operating system as normal and use this USB drive to boot up your Mac. For Intel Macs, restart and hold the Option key to enter into the boot selection dialog.įor both types of machines, use your keyboard’s arrow keys to select the USB drive from the list of bootable devices, click to confirm, and your USB drive will begin to boot.
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