Why does CCleaner only take 1hr to free wipe ~400GB?


New Member
I used both Eraser and CCleaner to wipe my laptop hard drive with the same file erasure method. How come CCleaner takes only an hour, whereas Eraser takes upto 5-9 hrs using the same 1-pass (pseudorandrom) method with cluster tips enabled? What is Eraser doing that CCleaner isn't doing?
Erasing cluster tips. Erasing cluster tips cannot be measured by the amount of bytes erased since opening and closing a file takes a significantly longer time than just writing continuous data (on a hard disk, anyway; SSDs are a different story)