...

# sudo apt update

# sudo apt upgrade

# sudo apt install binfmt loop gparted debootstrap

# if dd=/dev/zero of=/path/to/image bs=512 count=1

# sudo modprobe loop

# sudo losetup -f

loop0

# sudo losetup /dev/loop0 /path/to/image

# sudo partprobe /dev/loop0

# sudo garted /dev/loop0

Create pmOS_boot (flags boot) and pmOS_root partition

# sudo mount -t ext2 -o loop /dev/loop0p1 /media/boot

Copy /boot to pmOS_boot

Now we debootstrap rootfs to pmOS_root

# sudo mount -t ext4 -o loop /dev/loop0p2 /media/rootfs

Ubuntu Lunar Lobster and others
# debootstrap lunar /media/rootfs http://ports.ubuntu.com

Debian Bookworm and others
# debootstrap bookworm $D http://ftp.debian.org/debian

After debootstrap, we chroot to update and upgrade

# mount -t proc none $D/proc

# mount -o bind /sys $D/sys

# mount -o bind /dev $D/dev

# mount -o bind /dev/pts $D/dev/pts

# nano $D/etc/apt/sources.list


Ubuntu: with [distro-version] such as: jammy, kinetic, lunar

deb http://ports.ubuntu.com/ubuntu-ports/ [distro-version] main restricted universe multiverse

# deb-src http://ports.ubuntu.com/ubuntu-ports/ [distro-version] main restricted universe multiverse

deb http://ports.ubuntu.com/ubuntu-ports/ [distro-version]-updates main restricted universe multiverse

# deb-src http://ports.ubuntu.com/ubuntu-ports/ [distro-version]-updates main restricted universe multiverse

deb http://ports.ubuntu.com/ubuntu-ports/ [distro-version]-backports main restricted universe multiverse

# deb-src http://ports.ubuntu.com/ubuntu-ports/ [distro-version]-backports main restricted universe multiverse

deb http://ports.ubuntu.com/ubuntu-ports/ [distro-version]-security main restricted universe multiverse

# deb-src http://ports.ubuntu.com/ubuntu-ports/ [distro-version]-security main restricted universe multiverse

Debian:

deb http://deb.debian.org/debian bookworm main contrib non-free

deb http://security.debian.org/debian-security bookworm-security main contrib non-free

deb http://deb.debian.org/debian bookworm-backports main contrib non-free

deb http://deb.debian.org/debian bookworm-updates main contrib non-free

# chroot /media/rootfs

# apt update

# apt upgrade

Ubuntu:

# apt -y install ubuntu-standard initramfs-tools language-pack-en

Debian:

# apt -y install locales initramfs-tools

# tasksel install standard

# tasksel --list-tasks

# dpkg-reconfigure tzdata

# dpkg-reconfigure locales

en_US.UTF-8

# apt install suckless-tools dmenu term lightdm lightdm-settings onboard iwd nano htop neofetch blueman iio-sensors-proxy alsa-utils xfonts-base xfonts-75dpi xfonts-100dpi xfonts-cyrillic

# sudo nano $D/etc/fstab

LABEL=pmOS_root      /               ext4    defaults,noatime            0   0

LABEL=pmOS_boot      /boot           ext2    defaults                            0   1

tmpfs                /tmp            tmpfs   defaults,noatime,mode=1777          0   0

tmpfs                /var/tmp        tmpfs   defaults,noatime,mode=1777          0   0

# tmpfs                /var/spool      tmpfs   defaults,noatime,mode=1777          0   0

tmpfs                /var/log        tmpfs   defaults,noatime,mode=0755          0   0

# nano $D/etc/environment

MOZ_USE_XINPUT2=1

MOZ_X11_EGL=1

Create oem user and password

# useradd -mG sudo <username>

# passwd <username>

New passwd: <password>

# usermod -a -G adm,dialout,cdrom,audio,video,plugdev,dip,root,input <username>

Copy kernel folder to /media/rootfs

# cp -r /etc/* /media/rootfs/etc/

# cp -r /lib/* /media/rootfs/lib/

# cp -r /usr/* /media/rootfs/usr/

# cp -r /var/* /media/rootfs/var/

# umount /media/rootfs/proc

# umount /media/rootfs/sys

# umount /media/rootfs/dev/pts

# umount /media/rootfs/dev/

# umount /media/rootfs/

...