Why is my portable hard drive running out of space?

Question

Hard disks

I have an overgrown 500 GB hard drive (actually 465).
Files weigh 395 GB
Free 20 GB
465-395-20=50
50 GB is missing OS is
not on it, not standing, not used for swapping.
An interesting fact: When I start transfusing from a portable to a computer, formatting (ntfs), and vice versa, then 70 GB are free
. There are no viruses, and there weren’t

Answer 1

clean the basket, it also takes up space