I have a 500 gb hardisk. it had 8 folders occupying about 300 gb of space. Recently , i plugged it in and it has only 2 folders. however, when u look at the space its still occuping the space of my missing folders. I changed the files and folders option so tht if they are hidden it shows em but still not. the 2 folders on it take up only 50gb or something. Is this some virus? because it was working perfectly before this. Now, i have missing data that is still occupying space. which probably means it is still there somewhere in the hardisk or not i ran kaspersky and it didnt detect any virus on comp or hardisk. and, i checked by prop and tools for errors and it did ran and didnt show any msg after that.