saltstack/salt — pull request #502 by UtahDave (2012-01-13 07:59:13+00:00)
Title: Add Windows support to disk.py

Disable Windows in disk.py
Add win_disk.py for Windows disk usage

Windows uses 512 blocks by default, but I went ahead and populated the 1k-blocks field with the Windows equivalent in order to maintain what is done on other operating systems.

I'm not a filesystem guru, but I think this accurately gives disk usage on Windows.