menuentry "LiteOS" { linux /casper/vmlinuz boot=casper rootdelay=1 initrd /casper/initrd } Use xorriso to create the ISO:
apt install -y systemd ubuntu-server Add your user: Phoenix LiteOS 11 Ultralight Ultimate -FBConan-.iso
mkdir ~/liteos-iso Copy necessary files: Phoenix LiteOS 11 Ultralight Ultimate -FBConan-.iso
sudo umount /var/lib/liteos sudo mksquashfs /var/lib/liteos /var/lib/liteos.squashfs -e boot=LABEL=cloudimg-rootfs Create a directory for your ISO contents: Phoenix LiteOS 11 Ultralight Ultimate -FBConan-.iso
sudo cp /var/lib/liteos.squashfs ~/liteos-iso/ Create a grub configuration file ~/liteos-iso/boot/grub/grub.cfg with necessary boot entries.