Zero-filling is the process of overwriting data with a series of zeros. You partially or completely zero-fill a given storage container to either overwrite the space where a recently deleted file was on the hard disk or to completely wipe the hard disk and all the files, folders, and other data structures contained therein.
Zero-filling a hard drive is an excellent way to render the data unrecoverable. Single pass overwrites are now considered as effective as multi-pass overwrites were in the past (and have the added benefit of taking less time and wearing the disk less in the process).
- By Jason Fitzpatrick on 10/17/13