1.Open the start menu and click on run
2.In the text box type 'regedit' and press Enter. Registry Editor will Open.
3. open 'HEKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\StorageDevicePolicies' Key
4.If it does not exist , create it with ' Edit|New | Key' and rename it 'StorageDevicePolicies' and select it.
5.Now create a registry value by Right clicking on right side of window and select 'New| DWORD' and rename it with ' WriteProtect'
6.Now right click on it and select 'Modify' and set the value 1
now close the registry editor and restart the computer.
Now ,Your data is protected. NO one can copy you data by USB DRIVES.
When you wants allow the pen drive, change the value 0 from 1 nd restart computer.
Pen-drives will allow to copy data.
Have a FUN!!!!!!!!!!!!!!