I've just copied the instructions from my guide
Menu
Setup
System
Recording and Timshift settings
Recording settings
Default movie location should be media/hdd/movie
(If u are using a large enough usb/HDD u may want to go to
Menu
Setup
System
Rexording and timshift settings
Timeshift settings
Ensure timeshift location is showing: media/hdd/movie/timesshift
Autorecord is showing media/hdd/movie
if you want enable Autorecord
Autostart ts after 30secs or whatever.
As it is u must press pause to start timeshift)
Right, when I select Timeshift location it's showing /media/hdd/movie but I cannot add /timeshift to the end of this, only /movie OR /timeshift. When I agree to continue I get an error saying the directory is not a valid partition type. Any ideas?