512 2021 - Efi Shell Version 260

Think of the EFI Shell as a command-line interface (like the Windows Command Prompt or the Linux Terminal) that lives inside your computer's firmware. It operates before any operating system loads. It is a small application that runs directly on top of the UEFI firmware, enabling you to execute diagnostic commands, load drivers, manage boot entries, and run other EFI applications. It is an indispensable tool for system administrators, developers, and advanced users for low-level debugging and recovery. For example, you can use it to map available file systems (with the map command), examine the device tree, or even manually launch a boot loader by navigating to a specific .efi file on a FAT32 partition.

[NUC] Как использовать UEFI Shell для обновления ... - ASUS

Power down the computer and unplug it from the wall. If it is a laptop, remove the battery if possible.

If the computer boots directly to this shell instead of Windows/Linux: efi shell version 260 512 2021

Insert the Windows Installation USB into the broken computer. Boot from the USB by selecting it in your BIOS boot menu. Choose your language options and click . Click Repair your computer in the bottom-left corner. Go to Troubleshoot > Advanced Options > Command Prompt .

Disconnect all USB flash drives, external hard drives, memory cards, and optical discs. Your motherboard might be mistakenly trying to boot from an empty or non-bootable external storage device.

Move your primary storage drive (e.g., "Windows Boot Manager" or your SSD name) to the top of the list. Save changes and exit (usually F10 ). Step 3: Enable or Disable CSM / Secure Boot Think of the EFI Shell as a command-line

: Lists all available file systems (drives). Look for entries like fs0: , fs1: , etc.

If the drive is detected but Windows still refuses to load, the Boot Configuration Data (BCD) might be corrupted. You will need a bootable Windows installation USB drive for this step.

fs0: : Switches the active command line to the first recognized file system (usually the EFI system partition). It is an indispensable tool for system administrators,

: Your system is trying to boot from a network or internal shell rather than your hard drive.

This is the most frequent and easiest fix. Restart your computer and press the key to enter the UEFI/BIOS settings (common keys are Del , F2 , F10 , or Esc ). Navigate to the section. If you see an option called "UEFI Built-in EFI Shell" or "EFI Shell" as the first boot device, change the priority. Set "Windows Boot Manager" or the name of your hard drive/SSD as the primary boot option. Save and exit. This change alone has resolved the issue for countless users.

Insert the Windows installation USB and boot from it by selecting it in your motherboard's boot menu.