Always run ls on a file system alias (like fs1: ) before running execution tools to confirm you are targeting your temporary flash drive and not your OS boot partition.
For a deeper dive into specific commands like ls , cd , or map , you can refer to the Intel EFI Instruction Manual [14]. efi shell version 250 free
Download a UEFI Shell binary (such as the official Tianocore EDK2 Shell ). Create a folder path on the USB: \EFI\Boot\ . Always run ls on a file system alias
Once you have your free copy running, you need to know the most impactful commands. Version 2.50 includes a robust set of utilities. Here is a cheat sheet: Create a folder path on the USB: \EFI\Boot\
map : Lists all hard drives and USB sticks connected to the PC. fs0: : Switches control to your first storage drive.