When I Run the wipe free space it'll only shred C and D deleted files. but I have 5 hard Drives! and in the(or "at" i dont know) settings there are only C and D to add or Remove! How can I Shred Free Spaces(Deleted files) in the other drives?!
Go to Options in CCleaner, then you see Settings, click it, it should show you behavioral settings in CCleaner, scroll down and you can see checkboxes for the drives you want the Wipe Free space operation to execute. Just check the drives you want wipe free space to run on although this will take a lot of time if you have all of them checked. Look at the screenshot.