As the tile says, I did a fresh install from a USB (LiveRecoveryCD). Now my system boots up with three mounted volumes (499 Mb, 10Gb, 10 Gb). Is this an issue? I did not create them when installing. Whenever booting up I get a "System error prompt" but everything seems to work alright. However I can't open the Ubuntu Software center. Any command I could use to diagnose/fix this issues? Thanks.
Very odd: seems as if everything from my system is scattered through the different partitions!
After running lsblk I got this output.




