I have allocated a huge amount of space on my hard disk for elementary OS, as can be seen in GParted image. However, I get the message of "insufficient space" for the file system.
(low disk space in << Root file system >>)
When I installed elementary OS Freya 3 years ago, I gave it all one of my two discs, and did the automatic installation.
How can this happen, and how can I correct it? The system works perfectly well. Is it a false message and is there really no problem? That space increased from 340 Mb to 1.1 Gb when erasing old kernels.