File rpi :
“After setting up Ubuntu MATE for the first time on your Raspberry Pi, the file system will be restricted to the size of the original image, which is about 3.9 GB. Use this button to resize to fill the entire Micro-SD card.”
“It is safer to back up all of your data you wish to keep and re-flash the card with the new image. Attempting to upgrade may corrupt the SD card, prevent your installation from booting, or cause serve glitches.”
And here, I fail to make sense of the sentence, in it’s current state :
"Currently, hardware accelerated applications are
as they are with
Applications that rely on OpenGL ES libraries or require the GPU chip will fail to start."