Open up My Computer and click on Folder Options in the Tools menu. Then click on the Offline Files tab and check the Enable Offline Files checkbox. Then select whether you would like to Synchronize All Offline Files When Logging On or Synchronize All Offline Files Before Logging Off checkbox. You can also click on the Create An Offline Files Shortcut On The Desktop checkbox. You can also click on Encrypt Offline Files To Secure Data checkbox, which will encrypt the container that the data lives in. You can also limit the amount of space to be dedicated to storing cached files using the sliding bar.
Next, click on the Advanced Button. Next, choose the notification type for offline files by selecting Notify Me And Begin Working Offline or Never Allow My Computer To Go Offline. Then click on OK until the dialogs are complete and test.
Or you can just right-click on a drive letter and tell it to sync…