I have three partitions now : 1. System Partition[C:] = Windows + FDISR + Returnil + Applications, but NO data. 2. Data Partition[D:] = folders and personal data. 3. Returnil[Z:] I know that Returnil has no influence on my data partition [D:] and any change is allowed and retained. Straight from the manual (Help) of Returnil : Is Virtual Drive = Virtual Partition ? If true, I suggest you change it in "Virtual Partition". It's confusing, when you start using different expressions for the same thing. I have the impression, that I do NOT need a Virtual Partition, because 1. it seems to me, that Virtual Partition = folder "My Documents" AND 2. my data is stored on another partition. Am I right about this ? Suppose I would have my data on my system partition [C:] like most users. 1. When System Protection = ON, I have to store all my new data in the Virtual Partition, because I can't store it in the folder "My Documents" (including subfolders), otherwise I would lose it during the next reboot. 2. To get the new data in the folder "My Documents", am I supposed to move it from Virtual Partition to the real folder "My Documents", while System Protection = OFF ? 3. Or do I have to use my Virtual Partition as a replacement for the folder "My Documents" and not use the folder "My Documents" anymore. What does Returnil expect from users how to store their data ? Suppose I want to change a setting in a software on my system partition[C:] 1. Turn System Protection OFF 2. Change the setting 3. Turn System Protection ON. Is that the only way to do it ? The manual doesn't say anything about this and frankly, I didn't learn anything from the manual, because everything is well explained on the screens of Returnil already. The manual is just a repetition of what is said on the screens and what users really need to know is NOT explained : how to keep the GOOD changes.