It looks to me like I need to put my command : /usr/local/sbin/cryptsetup luksOpen /dev/sda4 vault in the /etc/init.d/rcS file before the if nofstab section.
I've tried this, and added 'etc/init.d/rcS' to my /opt/.filetool.lst file, but apparently the rcS file does not get included in the backup.
Am I on the right track, and if so, what do I do to customize my rcS file?