If you bought a laptop advertised as "No-OS" or "FreeDOS," the EFI shell is the operating system it came with [31]. To use the computer, you'll need to install Windows or Linux.
One night, after a long day of soldering and scripting, Nita sat at the laptop and ran the help command just to feel the shell's brisk, mechanical clarity. Her finger hovered over Enter and she typed a new message into the contributors file: "From a found machine to found people—keep the lights kind. —N." efi shell version 250 free
For more advanced users, the EFI Shell version 2.50 provides: If you bought a laptop advertised as "No-OS"