I want to add more disk space to my computer. My disk partitions are shown below:

My Disk

How can I extend "Filesystem Partition 3 (105 GB Ext4)" to use the "Free Space (105 GB)", without losing any data?

  • Please open a terminal and run the following command: df -m so we can see how space is being used and free space. Please post the results in your reply.
    – larry78723
    Jan 4, 2020 at 11:49
  • Here's a picture: imgur.com/a/KPO1YuH Jan 4, 2020 at 21:27

1 Answer 1


You are wanting to expand the root partition (/dev/sdb3). Trying to do this on a live system is difficult and inadvisable unless there is no other way (see here).

A better idea is to reboot the system into GParted Live or (my preferred Swiss Army Knife) SystemRescueCD and make the change with GParted.

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