My disk partition got corrupted?

Teh Tick

Reputable
Jun 16, 2014
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A few days ago I've been getting problems with some programs not wanting to run because of some system error with .NET Framework, however, today I realised that there's something wrong with the G: partition of my disk, the one that I have most of my programs installed on. Whenever I try to create or move files/folders to it I get the error message in the screenshot
2s97zgg.jpg

I get a similar message when I try to install things as well. I can still easily read and open files on the disk, just not create anything. I don't know why this happens or how to fix it. Any suggestions?