Touch Pad on/off has nothing to do with the OS, the controls are decided by the manufacture of the equipment. (Normally a key combination)
You can also usually do it from Control Panel under mouse and pointing options (Locate the touchpad option) or if not then have a look on the manufactures website for details.
Hope this helps
Bill
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English Riviera:
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (I�m definitely staying put).