Supports GPT partitions larger than 2 TB and includes gpt and guid commands.

When you type map at the prompt, does it list any devices starting with (like fs0 ), or only blk ?

Close the command prompt, remove the USB drive, and restart your PC. Step 5: Replace the CMOS Battery

Conversely, if you are running Windows 11, ensure is enabled and CSM is turned Disabled . Fixing a Corrupted Bootloader

If the drive doesn't appear, your storage controller may not be properly initialized.

Before we look at the error, it is important to understand the technology behind it. In older computers, the BIOS (Basic Input/Output System) controlled hardware initialization and booting. Modern computers use UEFI (Unified Extensible Firmware Interface), a more powerful and flexible firmware standard. UEFI includes an environment called the (sometimes referred to as the UEFI Shell).

Faulty add-in card (GPU, RAID controller). Solution: Remove suspected hardware, or use pci -i to disable problematic devices.

For more information on EFI Shell version 260 512 2021 and EFI firmware in general, we recommend the following resources:

Type fs0: and press . (The letters fs stand for "File System").

Type the following commands one by one, pressing after each: bootrec /fixmbr bootrec /fixboot bootrec /rebuildbcd Restart your PC.