I'm trying to create a custom ISO of ubuntu 18.04 using the official ubuntu-18.04.1-live-server-amd64.iso as a base image with my own set of preseed files to later create a vagrant box with packer.
I keep getting an error where the /root filesystem is missing (see attached screenshot at the end) and he solutions I've found around on forums use fsck (which is also missing) by loading it from a LiveCD to workaround this problem; but their fix doesn't apply to me as I'm trying to pack a working image.
I tried using the seeder files that come within ubuntu-18.04.1-live-server-amd64.iso but had no luck with that and then I used the following sites as reference to build up my seeder.cfg file:
Here is my preseed file:
d-i debian-installer/locale string en_US.UTF-8 d-i keyboard-configuration/xkb-keymap select us d-i passwd/root-password-crypted password __PASSWORD__ d-i passwd/user-fullname string vagrant d-i passwd/username string vagrant d-i passwd/user-password-crypted password __PASSWORD__ d-i user-setup/allow-password-weak boolean true d-i time/zone string US/Central d-i clock-setup/ntp boolean true d-i partman-auto/method string regular d-i partman-auto/choose_recipe select atomic d-i partman-partitioning/confirm_write_new_label boolean true d-i partman/choose_partition select finish d-i partman/confirm boolean true d-i partman/confirm_nooverwrite boolean true d-i pkgsel/include string curl openssh-server sudo git vim d-i pkgsel/language-packs multiselect d-i grub-installer/only_debian boolean true d-i finish-install/reboot_in_progress note d-i preseed/late_command string \ echo 'Defaults:vagrant !requiretty' > /target/etc/sudoers.d/vagrant; \ echo 'vagrant ALL=(ALL) NOPASSWD: ALL' >> /target/etc/sudoers.d/vagrant; \ chmod 440 /target/etc/sudoers.d/vagrant; \ ln -sf /dev/null /target/etc/systemd/network/99-default.link; \ in-target update-initramfs -u
And the file is used like this from
label bionic menu label ^Custom Install kernel /casper/vmlinuz append initrd=/casper/initrd net.ifnames=0 auto-install/enable=true debconf/priority=critical file=/cdrom/preseed/ubuntu-18.04/preseed.cfg ---
Any help or guidance will be highly appreciated.