Data in the system disk (by default, it’s С:\) can be overwritten very soon, even within several minutes, As Windows writes new temporary data to disk all the time: system cache, program cache, web cache and so on. The time required for this to happen can be quite long – up to a few months, but basically, it depends on the total size of your hard disk, on how you use your computer, and on what kind of local disk the old data is stored in. Therefore, the deleted file will be stored in the hard disk until the operating system overwrites this area with new data. The column on the right presents the way this data looks as simple text. The middle column shows data in the hexadecimal code (also known as HEX).
The first column on the left displays blocks of addresses.