Obviously, I do have enough space, it just isn't letting me write files, what's going on?

[edit: and why aren't my images imbedding? - I promise those are URL's of images I hosted, the first one is a picture of the DOSBOX inputs, the second is a picture of the error message i'm getting.]

Update: Okay, this is really strange, I am able to install the minimum install - something like 37 MB, but not the maximum install: 450 MB

the computer has some dozens of free Gigabytes, so I'm not sure what the problem here is.