At some point, I think during build 3120, my BootCamp partition stopped appearing on my desktop. I can still use Parallels, and it seems to mount and use the BootCamp partition fine. However, even if I restart my Mac, the BootCamp partition is still not visible on the desktop. In disk utility, I can see the partition ghosted, but if I click the mount button nothing happens. Does anybody know what's going on here? It seems OS X now has no access at all to the partition, but Parallels still seems to find it, mount it, and use it fine.