If you have low disk space in your drives, then you may get annoying pop-up messages from Windows that you are low on disk space. This can get extremely annoying at times, to turn off low disk space notification follow these steps:
Start regedit, expand HKEY_CURRENT_USER and in Software – Microsoft – Windows – CurrentVersion – Policies - Explorer, and set the value of NoLowDiskSpaceChecks to DWORD = 1. (This modification requires a logoff or reboot to work)