Creating a bootable iso from scratch. What am I missing?

I haven't found much info on how to do a custom boot iso boot except for attempting to imitate other people's steps (like venum linux).....and have failed.

I rsync'd my LFS distro via the command to a thumbdrive:
Quote:

sudo rsync -aAXv / --exclude={"/dev/*","/proc/*","/sys/*","/tmp/*","/run/*","/mnt/*","/media/*","/lost+found"} /mnt/USB

This can be installed to other PC's acting like a Gentoo build where I do a reverse "tarball" to the hard drive by doing a backwards command of the locations in the previous command, install grub, and do a grub-mkconfig to "Start it off"....but I am trying to get a live cd going, while using a virtualbox to "learn"

Now...I want to make my backup a bootable distro like you would for Mint or Ubuntu as an ISO.

I copied the files (isolinux.bin, vesamenu.c32....etc) like described here:
https://tool.frogg.fr/Tutorial_Sysli...m_files_anchor

my layout for
/var/tmp/Workspace/ISO is as listed below

/var/tmp/Workspace/ISO/isolinux:
isolinux.bin isolinux.cfg ldlinux.c32 libcom32.c32 libutil.c32 menu.c32 vesamenu.c32

My "OS/distro/backup" - whatever you want to call it is stored in the following location (USB is mounted at the location of "working backup"): /var/tmp/Workspace/ISO/von

My isolinux.cfg
Quote:

GNU nano 4.9.1 isolinux.cfg default vesamenu.c32 prompt 0 timeout 300 menu title VON OS label VON menu label Von 8.4 kernel /von/boot/vmlinuz-4.20-lfs-8.4

I ran the command on my Desktop directory in the terminal:
Quote:

mkisofs -o output.iso \ -b syslinux/isolinux.bin -c syslinux/boot.cat \ -no-emul-boot -boot-load-size 4 -boot-info-table -D \ /var/tmp/Workspace

I get the boot loader it says Von 8.4 etc.....but will do an infinite loop - what am I missing?