Wipe MFT Free Space Help

I don't get what Wipe MFT Free Space does.

Can somebody explain detailed?

I don't get what Wipe MFT Free Space does.

Can somebody explain detailed?

Try this

http://docs.piriform.com/ccleaner/ccleaner...leaner-settings

I don't get the mean from there.

If you delete a file from your hard drive using the normal method, then that file isn't actually deleted. Only it's reference in the "Master File Table" of that drive is removed, which tells Windows that the space taken up by that file is now available to be overwritten, which eventually it probably will be.

Although that file is still on your hard drive, the space it occupies is now allocated as "Free Space".

"Wiping Free Space" overwrites all these areas with random data or zero's, thus making the "deleted files" data theoretically unrecoverable.

I hope that explains it a wee bit better.