@Gilles For removing
quiet splash
, there is an option to edit by pressing key
e
at grub screen but It is set to ask password which is stored at
/etc/grub.d/01_PASSWORD
and while trying live disk of Ubuntu 14.04, I found the partition in which Trisquel is installed is corrupted. So, I was unable to access edit to grub, plus I've to formate partition and now
that question has no future. So, I deleted it.