It is important to clarify the version number "250" to avoid confusion with the UEFI Specification version.
For a deeper dive into specific commands like ls , cd , or map , you can refer to the Intel EFI Instruction Manual [14].
: You can sometimes find your boot file manually by typing fs0: (or fs1: , fs2: ) followed by dir to see if your files are there [14, 17].
You are using a minimal EFI Shell version 2.50 without built-in commands (some OEM builds strip commands). Fix: Download the full TianoCore version. Alternatively, use help to see available commands.
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