Running Opera 16+ from a USB device on Mac
Friday, September 6, 2013 8:08:25 PM
When you want to start Opera, double click on "Opera USB Mode" and Opera will save its profile in the same directory, rather than using the system one. You can also use this with Opera Next or Opera Developer.
P.S. I use the switch --data-path= to achieve this trick. This switch allows you to define an alternative profile directory, much like the old -pd switch from Opera Presto.