I'm new in using ubuntu. I got the following error for several lines after changed 'grub' in /etc/default
(gedit:2996): Gtk-WARNING **: Attempting to store changes into `/root/.local/share/recently-used.xbel', but failed: Failed to create file '/root/.local/share/recently-used.xbel.NXBRZV': No such file or directory
During installation, I created 2 disk partition for ubuntu. One is swapspace. Another is for '/'.
Is this a big issue? How to solve? Thx in advance