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If I were you I'd be inclined to shrink whatever partition you have existing on the tablet, create a new partition on the tablet and then dual boot it. I know this isn't straight forward (whatever you do don't just run the install.sh script!) but if you look at the install.sh script you should be able to manually execute the necessary commands changing them for your particular setup. Then you can modify and reboot until you have it working. The install is really very light in size so you wouldn't sacrifice much disk space.
Back everything up first if your not sure. I'm guessing you have windows installed on the tablet so you might want to take a look at the NTFSRESIZE tools on linux.