Chapter 2 Under the UEFI Shell
You cannot create experience. You must undergo it.
—Albert Camus
The UEFI Shell provides an interactive command-line environment. The shell includes such facilities as scripting and a hierarchical set of command profiles. This allows for usages spanning in-situ field diagnostics to a full provisioning environment. As the UEFI Shell is just a distinguished UEFI application, it bears mentioning some of the underlying capabilities of UEFI upon which the shell depends.
Shell and UEFI
The UEFI Shell is launched as a UEFI application. UEFI applications are formatted as PE/COFF executables and are loaded into memory and relocated in memory via the UEFI LoadImage() service and invoked via the UEFI StartImage() service. ...
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