Debian officielle guide til at bruge Preeseed under PXE boot til at unattended installere Debian med, til information kan denne dokumentation i større omfang også bruges til Ubuntu, dog er der nogle navne forskelle 

http://www.debian.org/releases/stable/i386/apbs02.html.en

 Personligt kalder jeg min Preeseed under pxe på denne måde via min PXE menu system.

 LABEL Deb4-server-Unattend
kernel debian/4.0/i386/linux
append interface=auto domain=it-nerd.dk locale=en_DK console-keymaps-at/keymap=dk auto url=http://10.10.100.1/deb4/Deb4-server.cfg vga=normal initrd=debian/4.0/i386/initrd.gz --

 ovenståend pluds nedestående config file giver mig en unattended Debian 4.0 installation som kun stopper for at få Hostname og enkle småting før serveren køre.

------------------------ Deb4-server.cfg ----------------------

#### Contents of the preconfiguration file
### Localization
# Locale sets language and country.
#d-i debian-installer/locale string en_US

# Keyboard selection.
d-i console-tools/archs select at
d-i console-keymaps-at/keymap select Danish
# Example for a different keyboard architecture
#d-i console-keymaps-usb/keymap select mac-usb-us

### Network configuration
# netcfg will choose an interface that has link if possible. This makes it
# skip displaying a list if there is more than one interface.
d-i netcfg/choose_interface select auto

# To pick a particular interface instead:
#d-i netcfg/choose_interface select eth0

# If you have a slow dhcp server and the installer times out waiting for
# it, this might be useful.
d-i netcfg/dhcp_timeout string 60

# If you prefer to configure the network manually, uncomment this line and
# the static network configuration below.
d-i netcfg/disable_dhcp boolean true

# If you want the preconfiguration file to work on systems both with and
# without a dhcp server, uncomment these lines and the static network
# configuration below.
#d-i netcfg/dhcp_failed note
#d-i netcfg/dhcp_options select Configure network manually

# Static network configuration.
#d-i netcfg/get_nameservers string 192.168.1.1
#d-i netcfg/get_ipaddress string 192.168.1.42
#d-i netcfg/get_netmask string 255.255.255.0
#d-i netcfg/get_gateway string 192.168.1.1
#d-i netcfg/confirm_static boolean true

# Any hostname and domain names assigned from dhcp take precedence over
# values set here. However, setting the values still prevents the questions
# from being shown, even if values come from dhcp.
d-i netcfg/get_hostname string
d-i netcfg/get_domain string    it-geek.local

# Disable that annoying WEP key dialog.
#d-i netcfg/wireless_wep string
# The wacky dhcp hostname that some ISPs use as a password of sorts.
#d-i netcfg/dhcp_hostname string radish

### Mirror settings
# If you select ftp, the mirror/country string does not need to be set.
#d-i mirror/protocol string ftp
d-i mirror/country string enter information manually
d-i mirror/http/hostname string ftp.dk.debian.org
d-i mirror/http/directory string /debian
d-i mirror/http/proxy string http://apt:3142/apt-cacher/

# Suite to install.
d-i mirror/suite string stable
# Suite to use for loading installer components (optional).
d-i mirror/udeb/suite string stable

### Partitioning
# If the system has free space you can choose to only partition that space.
# Note: this must be preseeded with a localized (translated) value.
#d-i partman-auto/init_automatically_partition \
#      select Guided - use the largest continuous free space

# Alternatively, you can specify a disk to partition. The device name
# can be given in either devfs or traditional non-devfs format.
# For example, to use the first disk:
d-i partman-auto/disk string /dev/discs/disc0/disc
# In addition, you'll need to specify the method to use.
# The presently available methods are: "regular", "lvm" and "crypto"
d-i partman-auto/method string regular

# If one of the disks that are going to be automatically partitioned
# contains an old LVM configuration, the user will normally receive a
# warning. This can be preseeded away...
#d-i partman-auto/purge_lvm_from_device boolean true
# And the same goes for the confirmation to write the lvm partitions.
#d-i partman-lvm/confirm boolean true

# You can choose from any of the predefined partitioning recipes.
# Note: this must be preseeded with a localized (translated) value.
#d-i partman-auto/choose_recipe \
#       select All files in one partition (recommended for new users)
#d-i partman-auto/choose_recipe \
#       select Separate /home partition
#d-i partman-auto/choose_recipe \
#       select Separate /home, /usr, /var, and /tmp partitions

# Or provide a recipe of your own...
# The recipe format is documented in the file devel/partman-auto-recipe.txt.
# If you have a way to get a recipe file into the d-i environment, you can
# just point at it.
#d-i partman-auto/expert_recipe_file string /hd-media/recipe

# If not, you can put an entire recipe into the preconfiguration file in one
# (logical) line. This example creates a small /boot partition, suitable
# swap, and uses the rest of the space for the root partition:
d-i partman-auto/expert_recipe string                         \
      boot-root ::                                            \
              200 300 350 ext3                                  \
                      $primary{ } $bootable{ }                \
                      method{ format } format{ }              \
                      use_filesystem{ } filesystem{ ext3 }    \
                      mountpoint{ /boot }                     \
              .                                               \
              500 10000 1000000000 ext3                       \
                      method{ format } format{ }              \
                      use_filesystem{ } filesystem{ ext3 }    \
                      mountpoint{ / }                         \
              .                                               \
              512 1024 300% linux-swap                          \
                      method{ swap } format{ }                \
              .

# This makes partman automatically partition without confirmation.
d-i partman/confirm_write_new_label boolean true
d-i partman/choose_partition \
       select Finish partitioning and write changes to disk
d-i partman/confirm boolean true

### Clock and time zone setup
# Controls whether or not the hardware clock is set to UTC.
d-i clock-setup/utc boolean true

# You may set this to any valid setting for $TZ; see the contents of
# /usr/share/zoneinfo/ for valid values.
d-i time/zone string Europe/Copenhagen

### Apt setup
# You can choose to install non-free and contrib software.
d-i apt-setup/non-free boolean true
d-i apt-setup/contrib boolean true
# Uncomment this if you don't want to use a network mirror.
#d-i apt-setup/use_mirror boolean false
# Uncomment this to avoid adding security sources, or
# add a hostname to use a different server than security.debian.org.
#d-i apt-setup/security_host string

# Additional repositories, local[0-9] available
#d-i apt-setup/local0/repository string \
#       deb http://local.server/debian stable main
#d-i apt-setup/local0/comment string local server
# Enable deb-src lines
#d-i apt-setup/local0/source boolean true
# URL to the public key of the local repository; you must provide a key or
# apt will complain about the unauthenticated repository and so the
# sources.list line will be left commented out
#d-i apt-setup/local0/key string http://local.server/key

# By default the installer requires that repositories be authenticated
# using a known gpg key. This setting can be used to disable that
# authentication. Warning: Insecure, not recommended.
#d-i debian-installer/allow_unauthenticated string true

### Account setup
# Skip creation of a root account (normal user account will be able to
# use sudo).
#d-i passwd/root-login boolean false
# Alternatively, to skip creation of a normal user account.
#d-i passwd/make-user boolean false

# Root password, either in clear text
#d-i passwd/root-password password r00tme
#d-i passwd/root-password-again password r00tme
# or encrypted using an MD5 hash.
d-i passwd/root-password-crypted password $1$8Qe.z.J1$CuwzmanU.UyORxX3w3gyj/

# To create a normal user account.
d-i passwd/user-fullname string hammer
d-i passwd/username string hammer
# Normal user's password, either in clear text
#d-i passwd/user-password password Hammer
#d-i passwd/user-password-again password Hammer
# or encrypted using an MD5 hash.
d-i passwd/user-password-crypted password $1$D9QjWuXr$/MAr4r1vTBx8Dz7inPgYu1

### Base system installation
# Select the initramfs generator used to generate the initrd for 2.6 kernels.
#d-i base-installer/kernel/linux/initramfs-generators string yaird

### Boot loader installation
# Grub is the default boot loader (for x86). If you want lilo installed
# instead, uncomment this:
#d-i grub-installer/skip boolean true

# This is fairly safe to set, it makes grub install automatically to the MBR
# if no other operating system is detected on the machine.
d-i grub-installer/only_debian boolean true

# This one makes grub-installer install to the MBR if it also finds some other
# OS, which is less safe as it might not be able to boot that other OS.
d-i grub-installer/with_other_os boolean true

# Alternatively, if you want to install to a location other than the mbr,
# uncomment and edit these lines:
#d-i grub-installer/only_debian boolean false
#d-i grub-installer/with_other_os boolean false
#d-i grub-installer/bootdev  string (hd0,0)
# To install grub to multiple disks:
#d-i grub-installer/bootdev  string (hd0,0) (hd1,0) (hd2,0)

### Package selection
#tasksel tasksel/first multiselect standard, desktop
tasksel tasksel/first multiselect standard
#tasksel tasksel/first multiselect standard, web-server
#tasksel tasksel/first multiselect standard, kde-desktop

# Individual additional packages to install
d-i pkgsel/include string openssh-server build-essential ssh vim-full psmisc htop bmon linux-headers-`uname -r` ucarp iproute iptraf rcconf rsync wget curl gunzip

# Some versions of the installer can report back on what software you have
# installed, and what software you use. The default is not to report back,
# but sending reports helps the project determine what software is most
# popular and include it on CDs.
popularity-contest popularity-contest/participate boolean false

### Finishing up the first stage install
# Avoid that last message about the install being complete.
d-i finish-install/reboot_in_progress note

# This will prevent the installer from ejecting the CD during the reboot,
# which is useful in some situations.
#d-i cdrom-detect/eject boolean false

### X configuration
# X can detect the right driver for some cards, but if you're preseeding,
# you override whatever it chooses. Still, vesa will work most places.
#xserver-xorg xserver-xorg/config/device/driver select vesa

# A caveat with mouse autodetection is that if it fails, X will retry it
# over and over. So if it's preseeded to be done, there is a possibility of
# an infinite loop if the mouse is not autodetected.
#xserver-xorg xserver-xorg/autodetect_mouse boolean true

# Monitor autodetection is recommended.
#server-xorg xserver-xorg/autodetect_monitor boolean true
# Uncomment if you have an LCD display.
#xserver-xorg xserver-xorg/config/monitor/lcd boolean true
# X has three configuration paths for the monitor. Here's how to preseed
# the "medium" path, which is always available. The "simple" path may not
# be available, and the "advanced" path asks too many questions.
#xserver-xorg xserver-xorg/config/monitor/selection-method \
#       select medium
#xserver-xorg xserver-xorg/config/monitor/mode-list \
#       select 1024x768 @ 60 Hz

### Preseeding other packages
# Depending on what software you choose to install, or if things go wrong
# during the installation process, it's possible that other questions may
# be asked. You can preseed those too, of course. To get a list of every
# possible question that could be asked during an install, do an
# installation, and then run these commands:
   debconf-get-selections --installer > instfile
   debconf-get-selections >> instfile


#### Advanced options
### Running custom commands during the installation
# d-i preseeding is inherently not secure. Nothing in the installer checks
# for attempts at buffer overflows or other exploits of the values of a
# preconfiguration file like this one. Only use preconfiguration files from
# trusted locations! To drive that home, and because it's generally useful,
# here's a way to run any shell command you'd like inside the installer,
# automatically.

# This first command is run as early as possible, just after
# preseeding is read.
#d-i preseed/early_command string anna-install some-udeb

# This command is run just before the install finishes, but when there is
# still a usable /target directory. You can chroot to /target and use it
# directly, or use the apt-install and in-target commands to easily install
# packages and run commands in the target system.
#d-i preseed/late_command string apt-install zsh; in-target chsh -s /bin/zsh

Alle Debian server er nu blevet opgraderet til Lenny alias den nye Debian Stable eller Debian 5.0

Her er min upgrade path:

• apt-get update
• apt-get install debian-archive-keyring
• apt-get upgrade
• apt-get dist-upgrade
• vi/etc/apt/source.list
  • Udsikft etch med lenny
• apt-get update
• aptitude install dpkg aptitude apt
• apt-get upgrade
• apt-get dist-upgrade
• reboot

Når der er en forskel mellem ny og gammel config filer valgte jeg at installere den nye,
dette betyder at dpkg laver en backup af den gamle som kaldes *.dpkg-old, specielt exim4
kan drille med disse dpkg-old filer, da disse skal fjernes før en update-exim4.conf kan køre igennem.

Før dpkg-old filerne slettes i forbindelse med Exim4 bør man naturligvis flytte sin configuration over i den nye
config filer som er blevet dannet - dette tog for mig ikke mere en 10 minutter :-)

 Opgraderingen blev udført på en Soekris 5501 samt en Compaq deskpro uden nogle større problemer

Soekris'en drillede tftp-hta, og måtte fjernes med apt-get remove tftp-hta hvorefter den igen blev installeret efter at
maskinen var opgraderet til Lenny