A little while ago, Apple decided to hide hard drive icons on your desktop as the default setting for the Mac OS. I happen to prefer having my internal and external drives visible on my desktop, but having my Windows partition visible bugs me. It may be that it’s a reminder that I have Windows on my Mac, or maybe it’s because I never really have to access that volume—either way, I want it gone.
The problem is that you can’t choose which drives to have visible—it’s an all or nothing deal. However, there is a way that will enable you to sort of trick your system into hiding it from the desktop. Log into your Windows partition and change the name of the C: volume so that it has a period at the beginning of the name. Mine is .BOOTCAMP.
When you log into the Mac side, the OS will see it as a hidden file and hide it on your desktop. It will still show up in the sidebar of a Finder window if you have Devices enabled. I am still working on how to hide it from there as well!