Son's Laptop - move ALL of Minecraft to another HDD partition?

[hech54]

I know ZERO about Minecraft or partitions.
My son's c: partition is LOADED....I'm guessing with Minecraft crap. I understand that the actual Minecraft exe file is tiny, it's the rest of the crap that is huge and getting out of hand?

How do I move ALL of this crap to the practically unused portion of his HDD?
This is Windows 8.1.....something else that I'm not that familiar with.

[Bjs]

Moved files now use symbolic links for minecraft

One of a few practical uses for symbolic links

Or mirror the data to a larger hard drive.

[AllisOne]

First you might check what really takes all space on your son's comp C: drive. You can use neat portable program Space Sniffer to do it: http://www.uderzo.it/main_products/space_sniffer/index.html . Right-click it and run it as administrator.

[budwzr]

You can delete or resize partitions. Right click the windows symbol on the left end of you taskbar and choose "Disk Management". I'm on Windows 10 now, but it should be the same on 8.1.