To install OMV6 on an already installed Debian 11 (Bullseye), simply execute the following steps as root user:
Bash
cat <<EOF >> /etc/apt/sources.list.d/openmediavault.list
deb http://packages.openmediavault.org/public shaitan main
# deb http://downloads.sourceforge.net/project/openmediavault/packages shaitan main
## Uncomment the following line to add software from the proposed repository.
# deb http://packages.openmediavault.org/public shaitan-proposed main
# deb http://downloads.sourceforge.net/project/openmediavault/packages shaitan-proposed main
## This software is not part of OpenMediaVault, but is offered by third-party
## developers as a service to OpenMediaVault users.
# deb http://packages.openmediavault.org/public shaitan partner
# deb http://downloads.sourceforge.net/project/openmediavault/packages shaitan partner
EOFBash
export LANG=C.UTF-8
export DEBIAN_FRONTEND=noninteractive
export APT_LISTCHANGES_FRONTEND=none
apt-get install --yes gnupg
wget --quiet --output-document=- https://packages.openmediavault.org/public/archive.key | gpg --dearmor | tee "/etc/apt/trusted.gpg.d/openmediavault-archive-keyring.gpg"
apt-get update
apt-get --yes --auto-remove --show-upgraded --allow-downgrades --allow-change-held-packages --no-install-recommends --option DPkg::Options::="--force-confdef" --option DPkg::Options::="--force-confold" install openmediavault-keyring openmediavault
# Populate the database.
omv-confdbadm populate
# Display the login information.
omv-salt deploy run hosts
cat /etc/issue