root@omv:~# wget -O - https://github.com/OpenMediaVault-Plugin-Developers/installScript/raw/master/upgrade4to5 | sudo bash
--2020-05-06 19:00:48--  https://github.com/OpenMediaVault-Plugin-Developers/installScript/raw/master/upgrade4to5
Auflösen des Hostnamens github.com (github.com)… 140.82.118.3
Verbindungsaufbau zu github.com (github.com)|140.82.118.3|:443 … verbunden.
HTTP-Anforderung gesendet, auf Antwort wird gewartet … 302 Found
Platz: https://raw.githubusercontent.com/OpenMediaVault-Plugin-Developers/installScript/master/upgrade4to5 [folgend]
--2020-05-06 19:00:48--  https://raw.githubusercontent.com/OpenMediaVault-Plugin-Developers/installScript/master/upgrade4to5
Auflösen des Hostnamens raw.githubusercontent.com (raw.githubusercontent.com)… 151.101.12.133
Verbindungsaufbau zu raw.githubusercontent.com (raw.githubusercontent.com)|151.101.12.133|:443 … verbunden.
HTTP-Anforderung gesendet, auf Antwort wird gewartet … 200 OK
Länge: 2760 (2,7K) [text/plain]
Wird in »STDOUT« gespeichert.

-                   100%[===================>]   2,70K  --.-KB/s    in 0s

2020-05-06 19:00:48 (10,1 MB/s) - auf die Standardausgabe geschrieben [2760/2760]

Purging incompatible plugins ...
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package openmediavault-cups
E: Unable to locate package openmediavault-dnsmasq
E: Unable to locate package openmediavault-domoticz
E: Unable to locate package openmediavault-duplicati
E: Unable to locate package openmediavault-eyefi
E: Unable to locate package openmediavault-ldap
E: Unable to locate package openmediavault-letsencrypt
E: Unable to locate package openmediavault-mysql
E: Unable to locate package openmediavault-nginx
E: Unable to locate package openmediavault-openvpn
E: Unable to locate package openmediavault-pxe
E: Unable to locate package openmediavault-remotedesktop
E: Unable to locate package openmediavault-route
E: Unable to locate package openmediavault-shellinabox
E: Unable to locate package openmediavault-syncthing
E: Unable to locate package openmediavault-transmissionbt
E: Unable to locate package openmediavault-urbackup-server
E: Unable to locate package openmediavault-vdo
E: Unable to locate package openmediavault-virtualbox
E: Unable to locate package openmediavault-webdav
Changing sources ...
sed: can't read /etc/apt/sources.list.d/omv-extras-org.list: No such file or directory
Applying mtu fix ...
Removing Packages archive file ...
Running apt-get update ...
Building local package repository ...
Get:1 file:/var/cache/openmediavault/archives  InRelease
Ign:1 file:/var/cache/openmediavault/archives  InRelease
Get:2 file:/var/cache/openmediavault/archives  Release [816 B]
Get:2 file:/var/cache/openmediavault/archives  Release [816 B]
Get:3 file:/var/cache/openmediavault/archives  Release.gpg
Ign:3 file:/var/cache/openmediavault/archives  Release.gpg
Hit:4 http://linux.teamviewer.com/deb stable InRelease
Hit:5 http://security.debian.org/debian-security buster/updates InRelease
Hit:6 http://httpredir.debian.org/debian buster-backports InRelease
Hit:7 http://packages.openmediavault.org/public usul InRelease
Hit:8 http://ftp.de.debian.org/debian buster InRelease
Ign:9 https://dl.bintray.com/openmediavault-plugin-developers/usul buster InRelease
Hit:10 https://openmediavault.github.io/packages usul InRelease
Hit:11 http://ftp.de.debian.org/debian buster-updates InRelease
Get:12 https://dl.bintray.com/openmediavault-plugin-developers/usul buster Release [4.363 B]
Fetched 4.363 B in 1s (5.895 B/s)
Reading package lists... Done
Running apt-get dist-upgrade ...
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  acpid apt-transport-https dh-python e2fslibs ifenslave libbind9-140
  libcomerr2 libdbus-glib-1-2 libdns162 libegl-mesa0 libegl1 libegl1-mesa
  libevent-2.0-5 libfile-copy-recursive-perl libgbm1 libgl1-mesa-glx libicu57
  libisc160 libisccc140 libisccfg140 liblvm2app2.2 liblvm2cmd2.02 liblwres141
  libmagickcore-6.q16-3 libmagickwand-6.q16-3 libmpfr4 libntfs-3g871 libonig4
  libopts25 libperl5.24 libpython3.5-minimal libpython3.5-stdlib libva-drm1
  libva-egl1 libva-glx1 libva-tpi1 libva-wayland1 libva-x11-1 libva1
  libxcb-xfixes0 linux-image-4.19.0-0.bpo.6-amd64 php-symfony-polyfill-apcu
  pm-utils python3-distutils python3-lib2to3 python3.5 python3.5-minimal
  update-inetd
Use 'apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Reboot now.

Then run:
  apt-get purge openmediavault-omvextrasorg resolvconf
  wget -O - https://github.com/OpenMediaVault-Plugin-Developers/packages/raw/master/install | bash
  apt-get update
  apt-get dist-upgrade

  omv-salt deploy run nginx
  omv-salt deploy run phpfpm

https://forum.openmediavault.org/index.php?thread/27909-omv-5-0-finally-out/&postID=219830#post219830
root@omv:~# reboot
root@omv:~# exit
Abgemeldet
Connection to 192.168.2.22 closed.