I installed Opengeu on my large SATA drive instead of Ubuntu and I had some
surprises. It is indeed quite lightweight, fast, interesting and beautiful but I
could not access the other Linux partitions for the first time. It uses Thunar.
I installed Nautilus and for the first time it did not access the other
partitions. By the command
sudo nautilus
somehow I managed. I installed pcmanfm and rox-filer and none of these could
access my other Linux partitions. They do not see them, strangely, in this case.
I installed f-spot in order to be able to copy photos. It can be started only
by typing
dbus-launch f-spot
in the terminal.
As DVD-burning software it contains Brasero, which is good and easy to use and I
will adopt it.
Open Office had to be installed, also.
I could not install and run Transmission properly so I installed bittorrent-gui
but it is a lot worse than transmission

I will continue to study Opengeu, however and try new things.
I also installed Enlightenment in Linux Mint and it works OK, it is fun but
not very comfortable.