How to Upgrade Debian 10 to Debian 11
One of the advantages of the Debian operating system is easy to upgrade to the newer version.
Login to your Debian 10 server using SSH or console. Install all available software updates with the command
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apt update && apt upgrade -y |
Remove any unused packages
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apt autoremove |
Change /etc/apt/sources.list
Make a backup of the file
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cp /etc/apt/sources.list ~/ |
Edit the file /etc/apt/sources.list
In the file, change all “buster” entries to “bullseye”. You can do this manually or using sed command
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sed -i 's/buster/bullseye/g' /etc/apt/sources.list |
Update System
Update repository cache with
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apt update |
Upgrade software with
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apt upgrade |
Do a full-upgrade with
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apt full-upgrade |
Now reboot system
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reboot |
After reboot, you need to make sure all services running properly, there is a chance some services won’t work as expected, in that case, you need to debug and fix i.
See Debian