I have cloned a couple of back-up hard disks of my current OS to save me the trouble of a total re-installation in case of a major crash or problem. If you still use W98 like I do you'll understand. I figured I would at least get some use out of the old hard disks that have been laying around for the past few years. Anyway, after cloning it I completely remove the hard drives from my computer, and it is then displayed in the Acronis OS Selector as a non-functioning OS. Makes sense so far. I then delete it from the Acronis OS Selector, and it disapears. Still make sense. However, if you look in the OS Selector, under 'Properties/partitions', the partition information for that deleted OS is still listed? Sort of confusing. I was trying to figure out how to delete it from 'Properties-partitions'. Looking in the Help menu (always the last-ditch effort), it says if you check-off the box labeled 'delete the operating system directories' it will delete the system folders of a windows operating system. I think this may be the way to get rid of all info about deleted OS systems in the Acronis OS Selector. But I am a little hesitant to use it. What does delete system folders mean?