Raspberry Pi – Raspbian-Update “Wheezy” to “Jessie”

Raspberry Pi – Raspbian-Update “Wheezy” to “Jessie”

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After about 2 years of development, Debian “Jessie” was released as stable on April 25,2015. Since the Rasbian distribution is based on Debian Linux, an updated version of Raspbian based on Jessie is now available for download. So it’s high time for me to update my Raspberry Pi installations accordingly.

Upgrading to Raspbian “Jessie” is quite easy, but takes some time. Therefore, a little patience and a cup of coffee makes sense.


Difficulty level:


Step 1: Update system

First we need to upgrade the existing system before we can upgrade from Raspian Wheezy to Jessie:

$ sudo apt-get update
$ sudo apt-get upgrade
$ sudo apt-get dist-upgrade


Step 2: Modify Release

Next, the package lists have to be adapted to the “Jessie” release. In principle, only the word “wheezy” has to be replaced by “jessie”. In order not to overlook any position, we simply let the replacement be done by the following command:

$ sudo sed -i /deb/s/wheezy/jessie/g /etc/apt/sources.list
$ sudo sed -i /deb/s/wheezy/jessie/g /etc/apt/sources.list.d/*.list


Step 3: Updating package lists

These new package lists must then be updated and imported:

$ sudo apt-get update


Step 4: Update to „Jessie“

Now that the package sources are up to date, you can start the upgrade:

$ sudo apt-get upgrade
$ sudo apt-get dist-upgrade

The upgrade process is carried out in two steps: First of all, there is a minimal upgrade to avoid conflicts and then a complete upgrade. The upgrade may take a while depending on your Internet connection. A certain amount of attention is required during the update process, as some configuration files are also updated. Therefore, Raspbian asks several times if you want to replace certain configuration files with a new one. If you have made changes to individual configuration files yourself in the past, you should press D (display differences) or N (not replace) depending on the file, otherwise Y (to replace the old configuration file with a new one).


Step 5: Clean up installation

After the system update, you can remove old packages and system corpses that are no longer needed with the following commands:

$ sudo apt-get autoremove
$ sudo apt-get autoclean

Finally, the Raspberry Pi has to be restarted.

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