Login from Live Disk and Fix a Broken Bootloader Using Chroot

chroot.md

Login from Live Disk (Chroot)

lsblk

sudo mount /dev/nvme0n1p3 /mnt
sudo cryptsetup luksOpen /dev/nvme0n1p3 cryptdata

sudo lvscan
sudo vgchange -ay

sudo mount /dev/mapper/data-root /mnt
sudo mount /dev/nvme0n1p1 /mnt/boot/efi

for i in /dev /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done
sudo chroot /mnt

Reference: https://support.system76.com/articles/login-from-live-disk/

Fix a Broken Bootloader Using Chroot

grub-install /dev/sda
grub-install --recheck /dev/sda
update-grub

Reference: https://www.maketecheasier.com/use-chroot-linux/