Dmdiag Overview

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Dmdiag.exe: Disk Manager Diagnostics

This command-line tool displays system state and configuration information describing disk storage.

DmDiag displays the following information for the computer on which it is run:

  • Computer name and operating system version

  • Physical disk to disk type

  • Mount points

  • LDM file versions

  • Drive letter usage, GetLogicalDrives(), GetDriveType()

  • \Device

  • Symbolic links

  • ldmsize

  • Kernel list

  • Disk partition information

Corresponding UI

There is no corresponding user interface for this tool.


For more information, see Disk Management overview.

System Requirements

The following are the system requirements for DmDiag:

  • Windows Server 2003 or Windows XP Professional

File Required

  • Dmdiag.exe

See Also


Dmdiag Syntax
Dmdiag Examples
Alphabetical List of Tools
Rsdir Overview
Rsdiag Overview
Iologsum Overview
Health_chk Overview
Ftonline Overview
Filever Overview
Efsinfo Overview
Dmdiag Overview
Dskprobe Overview
Diruse Overview
Dfsutil Overview
Connstat Overview
Cabarc Overview
Bitsadmin Overview