How to uninstall P-150M driver? I have 10.8.4 OS X and the Canon P-150M scanner does not work with it. Yet my friend has an older iMac where it works. I want to try the new driver and test whether things start working. So how can I remove a driver in OS X?
For scanning with a P-150 on OS X 10.9 Mavericks:


Turn OFF the autostart under the scanner. 
Disconnect the 2 USB cables and reconnect. 


It should work correctly now.