MS-DOS 6

MS-DOS 6.00 is a version of MS-DOS, released in 1993. This version includes many new utilities and features:
 * Disk defragmenter.
 * Disk compression.
 * Anti-virus.
 * A new backup system.
 * PC-PC file transfer tools.

It was heavily criticized as buggy by the media, primarily due to file corruption issues with DoubleSpace and the lack of tools to repair such issues.