http://help.artaro.eu/index.php/windows-7/the-basics-of-windows-7/use-removable-devices-properly-in-windows-7.html

Right Click on My Computer → Manage → Device Manager → Right Click on the Device → Properties → Policies

• If you have a fixed drive showing up in the “Safely Remove Hardware and Eject Media” Notification Area, select “Better performance (default)” and enable write caching.

• If you have a removable drive that doesn't show in the “Safely Remove Hardware and Eject Media” Notification Area, select “Quick removal”.

List drives:

wmic logicaldisk get caption,providername,drivetype,volumename

Dismount a USB storage device:

C:\Windows\system32\fsutil.exe volume dismount f: