Diantz
The diantz command is used to losslessly compress one or more files. The diantz command is sometimes called Cabinet Maker.
The diantz command is the same as the makecab command.
Dir
The dir command is used to display a list of files and folders contained inside the folder that you are currently working in. The dir command also displays other important information like the hard drive's serial number, the total number of files listed, their combined size, the total amount of free space left on the drive, and more.Diskcomp
The diskcomp command is used to compare the contents of two floppy disks.Diskcopy
The diskcopy command is used to copy the entire contents of one floppy disk to another.Diskpart
The diskpart command is used to create, manage, and delete hard drive partitions.Diskperf
The diskperf command is used to manage disk performance counters remotely.Doskey
The doskey command is used to edit command lines, create macros, and recall previously entered commands.Dosx
The dosx command is used to start DOS Protected Mode Interface (DPMI), a special mode designed to give MS-DOS applications access to more than the normally allowed 640 KB.
The dosx command is not available in 64-bit versions of Windows XP.
The dosx command and DPMI is only available in Windows XP to support older MS-DOS programs.

