Ubuntu server updating
The upgrade itself should take no longer than an hour to complete.
To date in 2018, Dream Host has completed upgrades on its Shared and VPS web servers.
A notice will also be visible in the Dream Host Control Panel during the upgrade process.
I used that command to upgrade my Raspberry PI: After that, I rebooted my Raspberry PI and it always got stuck on the u-boot screen. I also have a Macbook Pro, so if it changed anything I can try to format and write on my micro sd card with it.After that my PI was able to boot into xenial again. Anyway I also retried the procedure i did before ( overwriting the files in "system-boot" ) and again, it worked. So i dont know if this might effect my system with bad behavior in future. EDIT: After some testing i found out that i was unable to detect my wifi-device after doing the dist-upgrade-procedure.To fix this, i did a backup of the file /lib/firmware/brcm/brcmfmac43430before upgrading.) is installed on an instance, it will be updated automatically within 24 hours of the release of a new version.The update time cannot be easily cancelled or rescheduled.
After reboot I copied the file back to it's place (somehow it gets deleted by the system during the upgrade-procedure), did another reboot and now the wifi is back online. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).