This post is awfully outdated. Warning! Please back up your data prior to doing this. I will not be held liable should you incur any data loss by following this tutorial. This action was done in a VM (QEMU/KVM) and was only tested on a partition formatted as EXT4. I cannot guarantee that it works with other type of formats. Quoted from archwiki: "Warning: While enlarging, a file system can often be done on-line (i.