The message "EFI Shell version 2.60 [5.12] 2021" a common startup screen on modern computers, indicating that the system has entered the Extensible Firmware Interface (EFI) Shell rather than booting into an operating system like Windows

• If you type map and see nothing listed (no fs0):

  9. Secure Boot & Signatures

  • Shell may be blocked by Secure Boot if unsigned. To run unsigned apps:

    on how to change your boot order for a specific motherboard brand? Device boots into the EFI shell - MilDef - WE ARMOR IT.

    Next time you see the prompt Shell> on a black screen, know that you are sitting at one of the most powerful debugging interfaces in modern computing—EFI Shell version 260.512.2021.

    • 260: This represents the major version of the EFI Shell.
    • 512: This represents the minor version of the EFI Shell.
    • 2021: This represents the year of release.

    Running Updates

    If you are in the shell to update your BIOS: