How To Install Mac Os From Flash Drive. The Mac should start booting from the flash drive. Once your USB drive is freshly formatted its time to add the macOS Monterey installer that you downloaded earlier.
Once you complete the steps you can now insert the USB flash drive on your Mac computer to install reinstall or upgrade the operating system to the latest macOS version which can be Sierra Catalina Big Sur Monterey or higher. The file or drive must support Mac OS Extended and have at. Click Burn button at the bottom to start the process.
To install macOS on these computers youll need a flash drive that supports USB-C or a USB hub or adapter.
The process is fairly painless and if you have a bit of time and patience you can complete the task on a Mac. CDDVD drives are disappearing from computers leaving USB storage as the only option when re-installing an operating system. Insert your formatted USB drive and click Burn tab on the main screen. Create a GPT partition on a USB flash drive.
