Unable to install

Software PureOS
3

Booted from purism installer usb

  1. mkdir /mnt/root
  2. cryptsetup luksOpen /dev/sda3 root
  3. mount /dev/mapper/root /mnt/root
  4. mount /dev/sda1 /mnt/root/boot
  5. grub-install --boot-directory=/mnt/root/boot /dev/sda
  6. update-grub2

Rebooted; Hung on

SeaBIOS (version rel-1.11.0-0-g63451fc)
Booting from Hard Disk...
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