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Nuttymoon/chroot-encrypted.md

Last active June 9, 2022 11:52
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Ubuntu chroot procedure for encrypted systems
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chroot-encrypted.md

Ubuntu chroot procedure for encrypted systems

  1. Boot with a bootable Ubuntu USB
  2. Find the name of the root partition with lsblk
  3. Decrypt the partition using cryptsetup. The mapping name of the device has to be ${DEVICE}_crypt 
    sudo cryptsetup luksOpen /dev/nvme0n1p3 nvme0n1p3_crypt
  4. Activate the new volume with vgchange 
    sudo vgchange -ay
  5. Create a mount directory and mount the logical volume (found it in /dev/mapper) 
    sudo mkdir /mnt/ubuntu-chroot
sudo mount /dev/mapper/nvme0n1p3_crypt
  6. Mount all the Linux partitions needed for the chroot OS to be fully operational 
    sudo mount /dev/nvme0n1p4 /mnt/ubuntu-chroot/boot # boot partition
sudo mount --bind /dev /mnt/ubuntu-chroot/dev
sudo mount --bind /dev/pts /mnt/ubuntu-chroot/dev/pts
sudo mount --bind /proc /mnt/ubuntu-chroot/proc
sudo mount --bind /sys /mnt/ubuntu-chroot/sys
  7. Chroot into the system 
    sudo chroot /mnt/ubuntu-chroot
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