Question

7

Cannot boot after BIOS / UEFI reset to defaults

rated 0 times [ 7] [ 0] / answers: 1 / hits: 18085 / 2 Years ago, sun, november 13, 2022, 1:21:26

I have a ThinkPad X130e. I installed Ubuntu 12.04 LTS amd64 on it. All worked fine until yesterday. While diagnosing another issue I reset the BIOS / UEFI to defaults. Afterwards Ubuntu did not boot any more. The ThinkPad shows Operating System not found and that's it.

Did the BIOS / UEFI reset somehow nuke GRUB? If so how is that possible? How do I fix it?

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

eballxeye

Add To Favorites

Follow

Total Points: 370

Total Questions: 91

Total Answers: 139

Location: Suriname

Member since Sat, Jan 1, 2022

2 Years ago

eballxeye questions

1 Check if PID still running

Sun, Jan 8, 23, 18:23, 1 Year ago

1 Does software distributed for Ubuntu work for Ubuntu flavors?

Mon, Jul 18, 22, 18:24, 2 Years ago

1 Thinkpad E14 Gen 4 not booting installer

Sun, Sep 11, 22, 23:24, 2 Years ago

1 Pdf files are recognised as images

Tue, Dec 14, 21, 07:15, 2 Years ago

1 What is the meaning of this PkgResourcesDeprecationWarning warning from pipenv --version?

Sat, May 21, 22, 05:49, 2 Years ago

View All

answered 2 Years ago olltea · Accepted Answer

A BIOS reset, voluntary or through an update will wipe the EFI boot entries more often than not.

To restore the boot entry one has to use a recovery disc and reinstall grub-efi or grub-efi-amd64. The entry can also be added manually.

This question shows a couple of ways to fix it: https://superuser.com/questions/376470/how-to-reinstall-grub2-efi.