Get a copy for a Production Environment

From the Internet

For most people interested about getting a copy of DebianEdu / Skolelinux, the fastest way will be to download it from the Internet and write it to a USB stick, or burn it to a CD, DVD or Blu-ray Disc (BD). Images are large so if you have a slow connection, consider using a download manager. They typically enable you to pause and recommence the download at convenient times, and to resume an interrupted download.

Step 1: Choose an ISO

First of all, you need to know under which formats the ISOs are distributed. There are different options that vary in size and have a few differences between them, so let's clear any doubt before you start downloading anything.

What is a net install CD?

It fits a regular CD, so this ISO is the one that will download faster. On install, it will fetch some packages from the CD and the rest from the Internet, so when installing you will need a network connection.

What is a USB stick / BD image?

It takes more than 5 GB, so it will fit only on larger USB memory sticks, double layer DVD or Blu-ray Disc (BD). This ISO will take longer to download as it is a full offline installation medium that can be used without requiring an Internet connection.

/!\ If you plan to administer a Debian Edu network it is strongly encouraged that you keep such a copy near you. Repositories are reliable and will almost never fail but even so, if you are responsible about keeping a system up and running this can be a real life saver when worst situations arise.

Step 2: Download an ISO

See the Stretch status page for up-to-date information.

Step 3: Verify checksums

When downloading software from the Internet it is essential to verify its checksums, specially when talking about a distribution. It is relatively common to download a corrupted image that once burned will not work or fail during install. That may occur because of undetected transmission errors when getting it from source server.
At worst case, it would be possible for a malware creator to inject a free piece of software with his own hidden code and distribute through Internet to unaware individuals that could install it resulting in a potential security disaster. This problem can be solved by creating and verifying checksums and fortunately this procedure makes it almost impossible to adulterate software, even though technically not impossible.

/!\ No matter where you download the ISO, you should always verify checksums from the official distributor. In the case of Debian Edu, ONLY trust the checksums presented at http://ftp.skolelinux.no/skolelinux-cd/ or via https://www.debian.org/CD/http-ftp/.

Using Windows

Follow this tutorial
http://bhoover.com/how-to-verify-checksum-windows/

Using Linux

On most major Linux distributions you will only need to open a terminal and write:
sha256sum /path/to/where/the/iso/has/been/stored

It will generate a numbers and character string. Compare the string you get at the terminal with the one present at: http://ftp.skolelinux.no/skolelinux-cd/ or via https://www.debian.org/CD/http-ftp/.

If they equal, then everything is ok and you proceed to burn. If not, just download it again. If they still do not coincide, you should warn the maintainer of the site where you got it.

Step 4: Burn/Copy an ISO

Burn a CD/DVD/BD

Using Windows

Follow this tutorial
https://www.youtube.com/watch?v=lizhzDX7-AI

Using Linux command line

With a blank DVD or Blu-ray Disc in the drive do growisofs -dvd-compat -Z /dev/sr0=debian-edu-9+edu0-USB.iso which will burn the ISO onto the blank disk.
/!\ Adapt the ISO file name and the device name to your needs.

Using Gnome

follow this tutorial
https://www.youtube.com/watch?v=KKdIco-3nvo

Using KDE

follow this tutorial
https://www.youtube.com/watch?v=Tskf21y3_kk

Copy to a USB device

Using Linux

Installation using USB flash drives instead of CD / DVD / BD.

It is possible to directly copy the CD/BD .iso images to a USB flash drive (also known as USB sticks) and boot from them. Simply execute a command like this, just adapting the ISO file name and the device name to your needs:

Replace "X" with the right character to match the device where the system detects the usbkey's location when it's plugged in. You may need root privileges ("su -" or sudo) to copy the ISO image. Do be careful here not to blow away your Debian root disk.

Depending on which image you choose, the USB flash drive will behave just like a CD/DVD or Blu-ray Disc. Do not use Unetbootin or similar programs.

Order CD from a vendor

Get the latest CD sent by snail mail.

For those without a fast Internet connection, we offer to send you a CD for the cost of the CD and shipping

Send an email to cd (at) skolelinux.no.

Remember to include the address you want the CD sent to in the email.

Get a copy for a Test Environment

See the Buster status page for up-to-date information about the next release.

You can help us by testing images on a spare PC or in a virtual setup. Any help is appreciated. :) Please note that these images are intended for testing only. Do not use these for production unless you know what you are doing!