Hi,
If you want to go to the trouble of reformating and reinstalling all of your data / files. Your idea will work, assuming you put the music /video/ pictures on a seperate drive, but if you simply create new shares of just the folders you want the children to have read access tom and only those folders, your problem is solved in a few minutes. If the kids have access to your other folders, you must have given them access, perhaps to the entire Volume_1. There is no need for all of that extra time and work. Hope this helps. Good luck.