export_todo.md

VM export TODO list:

1. Run setup script (https://raw.githubusercontent.com/nesfit/PDS-VM/master/install.sh) and halt
2. Zerofree root partition (https://unix.stackexchange.com/a/310467)
   1. Boot to recovery mode (Shift while booting / Advanced / recovery mode / root)
   2. Edit /etc/fstab to add ,ro parameter to the root partition
   3. Reboot to recovery mode
   4. zerofree -v $(findmnt -n -o source /)
   5. mount -o remount, rw /
   6. Edit /etc/fstab to remove ,ro parameter of the root partition
   7. halt
3. Take snapshot
4. Export appliance