Fixing your t480s after firmware updates via fwupd
So I did something stupid. I tried fwupd (nice project though!) and broke my t480s. To be more precise, after the update process finished, the reboot did get stuck and grub did not load. I assumed that the startup process could not locate grub, therefore I went with reinstalling grub via a live USB:
I used to identify the partition to mount:
fdisk -l Device Start End Sectors Size Type /dev/nvme0n1p1 2048 1050623 1048576 512M EFI System /dev/nvme0n1p2 1050624 2099199 1048576 512M Linux filesystem /dev/nvme0n1p3 2099200 983898111 981798912 468.2G Linux filesystem /dev/nvme0n1p4 983898112 1000215182 16317071 7.8G Linux swap
Unencrypt the luks partition
sudo cryptsetup luksOpen /dev/nvme0n1 luks-partition
Next, mount the luks encrypted partition and chroot into it
sudo mkdir /mnt/arch sudo mount /dev/mapper/luks-partition /mnt/arch cd /mnt/arch arch-chroot
Now in the chroot environment of my broken system, I mounted the boot and EFI partitions:
mount /dev/nvme0n1p2 /boot mount /dev/nvme0n1p1 /boot/efi
And then regenerated the grub configuration and specify the EFI install location
grub-mkconfig -o /boot/grub/grub.cfg grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader id=antergos_grub
That's it. Short guide but took me hours to figure out. That's why this article is basically to future me as I will break my system again.
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