I've been dual-booting my ACER C710 Chromebook with ubuntu formally known as "ChrUbuntu". the first install of Ubuntu while running my chromebook in dev-mode, I set the partition option to 200. I think that is too low for not using the ChromeOS and I want to resize the partition and remove all the previous ones. please tell me what commands or scripts I have to run in order to resize the partition and possibly remove previous installations of Ubuntu to free up disk space. this chromebook has 320gb And I believe 200ram. I am very new to all of this and have done numerous researching to solve this issue but I have gotten no answers yet. I am looking for fast responses, Thx.