Edit: You can use the regular Ubuntu USB that you have already made and select "Try Ubuntu without installing"

Edit: You can use the regular Ubuntu USB that you have already made and select "Try Ubuntu without installing"

You'll need to go into develop mode in order to do this. The instructions are here: fascinatingcaptain.com/blog/dual-boot-chrome-os-and-linux

The best way to do this is to create a Ubuntu Live USB.

You will need to download a Ubuntu ISO and then you can get the YUMI software from here: https://www.pendrivelinux.com/yumi-multiboot-usb-creator/

The link for the YUMI software is about halfway down the page and there are also instructions for creating the live USB. Afterwards, set your Acer Chromebook to boot form USB, select Ubuntu, and begin. It won't make any changes to your system and you can simply shut down the computer and remove the USB when you're done.

Edit: You can use the regular Ubuntu USB that you have already made and select "Try Ubuntu without installing"