Windows Partition disappeared in Mac Desktop

I have successfully installed bootcamp and installed windows flawlessly. Since then I have rebooted and login to Mac and Windows with no visible problems. In my Mac Desktop, I have the MacHD and WinHD visible until today, the WinHD disappeared. When I go to Mac Startup disk, the windows is not visible. I checked the Disk Utility, tt shows that the Microsoft HD is not mounted. I have tried mounting and console say it succedded mountying but the HD is still not visible. Thanks for the help.

Yes. On the Windows side, the mac is available in the startup disk but not in the Mac side.