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How to boot UEFI usb drive on Dell XPS 13 L322X
Hi All,
Dell update popped up new update. Installed. Shut down. Following the update. The laptop loaded up with (probably coincidence):-
Recovery
Your PC/Device needs to be repaired
The Boot Configuration Data file is missing some required information.
File: \BCD
Error code: 0xc000000d
Attempting to get the Win 10 usb image to boot in UEFI mode doesn't seem to work. Wasted 3+ hours so far looking for solutions. Why can I not change the boot priority order in the bios? UEFI boot seems to always default to windows boot manager irrespective of any selection made. Am I going to have to remove the drive and repair the boot drive.
Anyone managed to boot from external dvd image successfully?
Is the A10 bios locked/limited? Is there a way to unlock?
Great way to ruin my bank holiday. Wife is moaning :(
Any help/links would be much appreciated.
Cheers
Phil
PhilLewin
8 Posts
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May 2nd, 2017 15:00
Hi,
Managed to repair it! Leaving this here in case it helps anyone else with similar problems.
Sata mode was AHCI.
Using F12 for boot menu does not show the usb boot device by default. It has to be added manually in the bios.
Disable secure boot.
When adding a new boot device you give it a name which appears under the (F12) boot menu. Next you select the usb device listed (Easier if there is only one plugged in!).
IMPORTANT PART! Filename -> Don't try entering the filename manually. Press enter and you will be presented with a simple file browser. Browse to efi\boot and select bootx64.efi.
If the filename is not correct selecting the new usb boot option in the (F12) boot menu will just appear to be booting as normal ignoring your selected boot device.
Once I had booted into Win10. Selected repair->advanced and then command prompt.
typed:-
BOOTREC /FIXMBR
BOOTREC /FIXBOOT
BOOTREC /REBUILDBCD
then reply 'y' to the question. All should complete successfully. Then remove usb drive and reboot. Win10 back up and running.
ejn63
9 Legend
9 Legend
•
87.5K Posts
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May 1st, 2017 06:00
Check you UEFI setup to make sure the update didn't change the drive mode (AHCI to RAID, etc.). If it did, you'll see that problem.
Saltgrass
3 Apprentice
3 Apprentice
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4.3K Posts
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May 1st, 2017 08:00
You will normally use an F12 key to open the Boot Device Menu. If you have burned the .iso image to the DVD and have it loaded BEFORE you boot or reboot the system, the UEFI version should be seen. You may have to hit a key to allow the boot but there should be a message if that is required.