Ensure that or your specific SSD/HDD is set as the first boot device. Save your changes (usually by pressing F10 ) and exit. 3. Change Storage Controller Settings (AHCI vs. RAID)
If the motherboard cannot find your hard drive in the boot order, it defaults to the shell. Enter your BIOS/UEFI settings menu. Locate the list.
Insert the Windows USB drive and boot from it via the BIOS boot menu.
When the EFI Shell loads, it prints a list of device mappings at the top, labeled as fs0 , fs1 , blk0 , blk1 , etc. The fs labels stand for "file system" and represent viewable partitions. 2. Access the Partition efi shell version 260 512 2021
The physical SSD or HDD has disconnected from the motherboard.
Create a UEFI bootable USB with shell.efi version 260.512.2021:
Changes in for , if syntax. Solution: Refer to the UEFI Shell 2.6 specification document for new conditional structures. Ensure that or your specific SSD/HDD is set
What of computer or motherboard are you using?
As the computer starts up, repeatedly press the setup key. This is usually F2 , F12 , Del , F10 , or Esc (depending on your motherboard manufacturer).
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 Change Storage Controller Settings (AHCI vs
: You are trying to boot a PC that doesn't have an operating system installed yet.
If your operating system starts up using this method, your files are safe, and the issue is simply an incorrect boot order in your motherboard settings. How to Fix the Root Problem permanently
Check memory mapped I/O or PCI device handles:
Conversely, if you are running Windows 11, ensure is enabled and CSM is turned Disabled . Fixing a Corrupted Bootloader