****@tASUS:~$ df
Filesystem                  1K-blocks     Used Available Use% Mounted on
/dev/mapper/ubuntu--vg-root 303214976 86527888 201261552  31% /
none                                4        0         4   0% /sys/fs/cgroup
udev                          1687184        4   1687180   1% /dev
tmpfs                          340580     1224    339356   1% /run
none                             5120        0      5120   0% /run/lock
none                          1702888      172   1702716   1% /run/shm
none                           102400       60    102340   1% /run/user
/dev/sda2                      241965   139434     90039  61% /boot
/dev/sda1                      523248     3428    519820   1% /boot/efi
/home/****/.Private         303214976 86527888 201261552  31% /home/tris
****@tASUS:~$ 

Software Updater
----------------

The upgrade needs a total of 93.3 M free space on disk '/boot'. Please free at least an additional 1,139 k of disk space on '/boot'. Empty your trash and remove temporary packages of former installations using 'sudo apt-get clean'.