Debian Bullseye With Windows 11 Dual Boot Installation – Step-by-step

November 15, 2021 | By the+gnu+linux+evangelist.

Installing

  1. 6. Installing Debian Bullseye on Top of Windows 11

    Then Boot from Debian Installation Media
    Start by choosing “Graphical install“:


    Then select the Language:
    (To confirm choices use Space-Bar, Enter or your Mouse)


    Again select the Location:


    Configure the Keyboard:


    Now the system start automatically to load the Installer Components and to configure the Network Hardware:


    So then follow to Configure the Network setting the “Hostname“, as default choice for a Desktop put “localhost”:


    And in case, next also the “Domain Name”:


    Choose the “root” Admin User Password:


    Now set the User Full Name:


    Again the “username“:


    And the User Password:


    Configure the Clock:


    Follow with the Disk Partitioning.
    So if you Partitioned Windows 11 Disk leaving a Free Space Volume, now choose “Guided – use the largest continuous free space“:
    (Else you should see -> the Manual Partitioning Guide)

    Guided free space


    Again as Partition Scheme you can make your Choice:

    All files in one partition


    Last, confirm to “Finish partitioning and write changes to disk”:

    Write changes to disk


    Finish choosing “Yes”:

    Write changes to disk

    Then start automatically the base system setup:

    After start the Package Manager Configuration.
    Usually you “No” need to load extra Media:


    Next follow to configure the Apt Package Manager.
    So confirm to use a Network Mirror with “Yes“:


    Then choose the Debian archive Mirror Country:


    Again the Archive Mirror, when uncertain take the Default:

    And possibly also the Proxy Url (Not needed):


    Then start automatically the first software installation procedure:

    Choose if partecipating to the Software popularity contest:

    Next you can choose the additional Software and the Desktop to setup on System:

    In this guide I make use of the Default GNOME Environment.

    Now you may wait a little longer during the Software Installation:

    Now confirm to install the GRUB Boot Loader:


    And next ordinarily choose the “/dev/sda” as Target:


    Finally, the Installation should be successfully achieved:


    Congrats, you should be able to Restart into Debian 11 GNU/Linux! :)


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