This is a guide for the advanced users, I dont go into detail for every step. The same steps, with different parameters can be used for Debian 9.

What you need:

• a Jornada 7xx
• a Compact Flash card (minimum a 512MB card) and a CF card reader
• a Linux PC or virtual Linux machine (VirtualBox), I recommend Devuan or Debian Linux
• the bootloader and PARAMS.txt http://www.sp-net.at/nextcloud/s/SQbqbX64QdZarop?path=%2Fbootloader
• the kernel http://www.sp-net.at/nextcloud/s/SQbqbX64QdZarop?path=%2Fkernel3.16.81
• debootstrap debootstrap.zip

All commands should be run with suitable user privileges or as root. I did all of this on a Devuan Ascii host machine.

$ sudo cfdisk /dev/sdc

The partition table should look like this:

Format the new partitions

$ sudo mkfs.vfat /dev/sdc1
$ sudo mkfs.ext4 /dev/sdc2
$ sudo mkswap /dev/sdc3

Copy the linexec.exe, PARAMS.txt and zImage to the first (FAT) partition of the CF card (/dev/sdb1).

$ cd ~
$ git clone https://salsa.debian.org/installer-team/debootstrap.git
$ apt-get install qemu-user-static

For Devuan 2:

$ mkdir /mnt/jornada
$ mount /dev/sdc2 /mnt/jornada
$ su -
# cd /home/yourusername/debootstrap
# export DEBOOTSTRAP_DIR=`pwd`
# ./debootstrap --keyring=/usr/share/keyrings/devuan-archive-keyring.gpg --arch armel --foreign ascii /mnt/jornada https://pkgmaster.devuan.org/merged
# cp /usr/bin/qemu-arm-static /mnt/jornada/usr/bin
# LANG=C.UTF-8 chroot /mnt/jornada qemu-arm-static /bin/bash
# export DEBOOTSTRAP_DIR=/debootstrap
# /debootstrap/debootstrap --second-stage

For Debian 9:

$ mkdir /mnt/jornada
$ mount /dev/sdc2 /mnt/jornada
$ su -
# cd /home/yourusername/debootstrap
# export DEBOOTSTRAP_DIR=`pwd`
# debootstrap --arch armel --foreign stretch /mnt/jornada http://ftp.at.debian.org/debian
# cp /usr/bin/qemu-arm-static /mnt/jornada/usr/bin
# LANG=C.UTF-8 chroot /mnt/jornada qemu-arm-static /bin/bash
# export DEBOOTSTRAP_DIR=/debootstrap
# /debootstrap/debootstrap --second-stage

$ vi /etc/fstab

Insert the mount points as you like. For example:

/dev/hda3       none    swap    sw              0       0
proc            /proc   proc    defaults        0       0
/dev/hda1       /mnt/boot       vfat    rw,auto,user,umask=0000 0       0

$ dpkg-reconfigure tzdata

$ echo DebianHostName > /etc/hostname

$ vi /etc/apt/sources.list

Insert something like this:

deb http://deb.devuan.org/merged ascii          main
deb http://deb.devuan.org/merged ascii-updates  main
deb http://deb.devuan.org/merged ascii-security main

Update your sources:

$ apt update

UTF-8 is recommended.

$ apt install locales
$ dpkg-reconfigure locales

$ passwd
$ adduser user

tasksel install standard

For example all packages that are included in my ready-to-use rootfs

apt-get install ssh xserver-xorg-video-dummy xserver-xorg-input-void xserver-xorg-core xinit x11-xserver-utils xserver-xorg-video-fbdev xserver-xorg-input-evdev fluxbox apmd wireless-tools netsurf lynx ftp hostap-utils xinput wpasupplicant leafpad xinput-calibrator

$ vi /etc/X11/xorg.conf.d/99-calibration.conf

Insert:

Section "InputClass"
        Identifier      "calibration"
        MatchProduct    "HP Jornada 7xx Touchscreen"
        Option  "Calibration"   "1001 91 57 914"
        Option  "SwapAxes"      "0"
EndSection

Just type exit and umount your CF card.