In 2 Schritten.

1.1 Armbian Image Downloaden: https://www.armbian.com/bananapi/

1.2 Rufus Download (SD KArte beschreiben) https://rufus.ie/de_DE.html

1.3 Image brennen

2. OMV mit SSH installieren:

wget -O – https://github.com/OpenMediaVault-Plugin-Developers/installScript/raw/master/install | sudo bash

Detailliert in Englisch:

https://github.com/OpenMediaVault-Plugin-Developers/docs/blob/master/Adden-A-Installing_OMV5_on_Armbian.pdf