Because of its small footprint and direct hardware access, MS-DOS 6.22 remains popular in specific circles: How To Create A Bootable MS DOS USB Flash Drive
This version was essentially a minor update to fix legal issues surrounding disk compression, but it solidified many classic tools: Ms Dos 6.22 Free
A modern replacement for the older CHKDSK , capable of finding and repairing physical disk errors. Because of its small footprint and direct hardware