Maya walked Leo through the real process. Here’s what she taught him: Step 1: Back up everything important. Leo copied his photos, documents, and saved games to an external drive. Formatting erases everything . No take-backs.
He set the USB drive as the first boot device. Then he saved changes (usually F10) and exited. The computer restarted.
“Because,” Maya explained, “they really mean: boot from a USB drive to run a formatting tool before the main operating system loads. You need the BIOS to change the boot order so the computer starts from your USB stick, not the corrupted hard drive.”