Having an older PC about, I decided to install OpenMediaVault on there earlier in the year after adding in a 6 TB hard drive for storage, a Gigabit network card to speed up backups and a new BeQuiet! power supply to make it quieter. It has been working smoothly since then and the release of OpenMediaVault 2.x had me wondering how to upgrade to it.
Usefully, I enabled an SSH service for remote logins and set up an account on there for anything that I needed to do. This includes upgrades, taking backups of what is on my NAS drives and even shutting down the machine when I am done with what I need to do on there.
Using an SSH session, the first step was to switch to the administrator account and issue the following command to ensure that my OpenMediaVault 1.x installation was as up to date as it could be:
Once that had completed what it needed to do, the next step was to do the upgrade itself with the following command:
With that complete, it was time to reboot the system and I fired up the web administration interface and spotted a kernel update that I applied. Again the system was restarted and further updates were noticed and these were applied, again through the web interface. The whole thing remains based on Debian 7.x but I am not complaining since it quietly does exactly what I need of it.