If you have a seperate /home
partition, you can replace your Linux Mint partition and mount your old /home
partition in your new Ubuntu install. Make sure NOT to format your /home
partition when installing Ubuntu. If you do, your files are lost.
/home
is intended as a partition for your personal files. If there are (configuration) files outside your /home
partition that you want to keep, move them beforehand.
If you did not select to have a seperate /home
partition, don't worry, here is a guide to help you with that. It involves moving your files to a seperate partition. After following these steps, replace your Mint install with a new Ubuntu install.
If you are not content on keeping your files, you can just install Ubuntu as normal.