Hi, All my programs are installed on a distinct partition P:\ 'Advanced' software for disaster recovery images, e.g. AOMEI Backupper, Macrium Reflect, offers different options for system and data drives. Which should I choose: - system, because P:\ is in fact an extension to Windows' Program Files and Program Files (x86) or - data, because Windows itself is not installed on P:\ I would also appreciate some explanation on the difference between these methods. Earlier I used DriveSnapshot which does not make such a distinction. Thanks.