Lately, my Windows 10 hard drive is being used up for no reason whatsoever - I'm pretty sure it was Windows Update that's causing it. What should I do?

SPECS:

OS: Windows 10 IoT Enterprise LTSC 64-Bit and Linux (dual-booting on separate hard drives)

CPU: Intel Core i7 9700K

RAM: 32GB

Motherboard: MSI Z3-90-A PRO (MS-7B98)

GPU: NVIDIA GeForce GTX 770