Mac Repair Service Bootable Drive Install MacOS X Service One 128GB Bootable USB For All Your Professional Needs! Repair Reinstall Intel Apple Silicon M Generation Macs FREE USB-C Adapter to Connect with Newer Devices! Perfect for Old New Macs. Unlimited installs on unlimited devices. Now Contains Elevan Mac Operating Systems in one Powerful Bootable USB Flash Drive Install Including Yosemite, High Sierra, Sierra, El Capitan, Mojave, Catalina, Big Sur, Monterey, Ventura, Sonoma, Sequoia Fresh Install, Wipe Clean System, Restore, Backup, Upgrade 128GB Fastest USB 3.0 Drive for Super Fast Installs ?? INITIAL INSTALL INSTRUCTIONS: 1. Insert this bootable flash drive; 2. Connect a wired keyboard mouse; 2. Restart computer, when it chimes, keep holding down the "Option" key on your keyboard until you see the booting screen; 3. Select the install operating system then press enter; 4. Follow on screen instructions to install the operating system; 5. Detailed Step by Step Video Guide Instructions Link enclosed; ?? For M1, M2 M3 Machines: Shut down the computer, power it on, hold down power button until you see start up options where you can use the cursor keys to choose operating system to install and then hit enter.