Winning starts with beginning.
—Robert H. Schuller
One of the most apt uses for the UEFI Shell is in the bare metal provisioning of a system. Recall from earlier chapters on the states of the machine that there is a point where the system board has been manufactured, peripherals have been attached and tested, but there is not necessarily an operating system.
The act of configuring the operating system or providing a new operating system is called bare metal provisioning. We refer to this action as bare metal because the only services exposed by the platform at this point are carried with the system board, namely its UEFI firmware. This differs from OS-hosted provisioning wherein a fully extant operating system ...