Arch Linux

Greed1sGood

Member

Registered: 2012-02-11

Posts: 44

Thinkpad T420s BIOS Flashing

Just wanted to share my experience, and the problem I had to solve in the hope that this will help other users.
On my system Arch is installed on a mSATA SSD drive (OCZ NOCTI 30 GB) formatted as gpt using UEFI boot partition.
I've successfully flashed my bios using the grub4dos method described in thinkwiki(1.31 -> 1.34) http://www.thinkwiki.org/wiki/BIOS_Upgr … r_Linux.29
Unfortunately after the update the arch boot entry in the BIOS was gone and I could not boot into the system. The simple solution is to recreate the boot entry using efibootmgr:
1. I used Arch Live CD and loaded the efivars module (modprobe efivars).
2. use the following command:

efibootmgr --create --gpt --disk /dev/sdX --part Y --write-signature --label "Arch Linux (GRUB2)" --loader '\path\to\boot\loader\my_bootloader.efi'

where sdX is your boot HDD and Y is the partition number. the complete information can be found in the following wiki entry: https://wiki.archlinux.org/index.php/Un … _Interface.

IMHO at least a warning should be placed in the related ArchWiki and ThinkWiki entries, for the potential problem.

bernarcher

Forum Fellow

From: Germany

Registered: 2009-02-17

Posts: 2,281

Re: Thinkpad T420s BIOS Flashing

IMHO at least a warning should be placed in the related ArchWiki ..., for the potential problem.

Then do it! It is a Wiki, after all. ;-)

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