guys,
I've been trying to search a solution for this all over Google, but my effects was of no avail. I wanted to resize my current partition to about 500 GB and create a new partition with all free space remaining. However, for some reason GParted says that I've used all space while the properties clearly states that I've only used 60 GB.
I've also tried using GParted live on USB, but still no luck.
Here's the screenshot: https://gyazo.com/d7cd99f2dfede2bd00ccb674ea89aa15
If you're able to help me with this problem, I'll thank you so much!