Is this satire?

The Linux kernel (and windows btw) often lock threads to the completion of reads or writes to disk. When your primary drive is a spinner and you saturate it's bandwidth with a long-running copy (your from windows copy) you take those normally short processes and add the latency penalty of a thrashing disk to every lock.

Yes you can fix this by moving the entire kernel and operating system into ram at boot, but with 8gb you probably don't want to do that, especially when a couple of Firefox tabs will fill that up pretty quickly.

The solution is drop the gui, load the os into ram and disable logging, or be patient, and don't expect any modern operating system to hold up when you are running long copies against a high-latency root disk.

Try changing your io scheduler.

Right now I’m moving a Windows partition

This may have something to do with the unresponsive HDD

I’m drunk right now

The other thing that may cause this symptoms.

yeah linux is completely unusable bro /s

You might want to check the SMART stats on the disk, if it's struggling that much, it might be because it's starting to fail. That's assuming it's the internal disk, if it's external, make sure you're using an appropriate port and cable. I've never seen a linux box struggle the way you're describing without it being a hardware problem, but technogy's always throwing up new surprises.

Linux Mint usually works well on older hardware. There are limits though and it looks like your PC is simply too old. There are plenty of distros that are specifically designed to work on older hardware. I suggest you try one of those.

are you running it from a spinning disk? HDD, not an SSD? Thatd be why its so slow.