dmidecode -- Render System Management BIOS data in human readable form

SYNOPSIS

dmidecode [-V ] [-q ] [-u ] [-s keyword] [-t type] [-r filename] [-w filename]

dmidecode decodes a raw System Management BIOS (SMBIOS) http://www.dmtf.org/standards/smbios data block. loaded either from a file or from the system firmware. The decoded data is then displayed in human readable form.

Options

--version

-V

Display version information and exit.

--quiet

-q

Be a little less verbose.

--dump

-u

Always display raw data rather than human readable form.

--stringkeyword

-skeyword

Keywords may be used to extract specific data from a type. e.g.

$ dmidecode -t 1

will display system information.

System Information
	Manufacturer: Dell Inc.
	ProductName: Precision WorkStation T5400
	Version: None specified.
	SerialNumber: XXXXXXXX
	UUID: 617618CD-5069-4629-845C-B5A8F305F86D
	WakeUpType: Power Switch
	SKU: None specified.
	Family: None specified.

While

dmidecode -s system-uuid

displays just the UUID

617618CD-5069-4629-845C-B5A8F305F86D

Valid keywords are:

bios-vendor
bios-version
bios-release-date
system-manufacturer
system-product-name
system-version
system-serial-number
system-uuid
baseboard-manufacturer
baseboard-product-name
baseboard-version
baseboard-serial-number
baseboard-asset-tag
chassis-manufacturer
chassis-type
chassis-version
chassis-serial-number
chassis-asset-tag
processor-family
processor-manufacturer
processor-version
processor-frequency.

--typetype

-ttype

type is a DMI type number as described in the SMBIOS standard or type name as descrive below. The -t may be specified multiple times.

--from-dumpfilename

-rfilename

Read the raw data block from disk file filename instead of from GetFirmwareData().

--dump-binfilename

-wfilename

Write the raw data block read GetFirmwareData() to disk file filename.

PORTABILITY

Linux. Windows 10. Windows Server 2016. Windows Server 2019. Windows 11. Windows Server 2022. Windows Server 2025.

BUGS

The PTC MKS Toolkit implementation shares no source code with the non-GNU tool of the same name and so may operate slightly differently under some circumstances. Where possible such differences will be repaired. Not all types are decoded to human readable form and act as though the -u option was specified. -d is not implemented to read directly from memory.

DMI TYPES

SMBIOS specification version 2.8 (April 2013) describes the following types:

*Type*	*Description*
0	BIOS Information
1	System Information
2	Baseboard (or Module) Information
3	System Enclosure or Chassis
4	Processor Information
5	Memory Controller Information (Obsolete)
6	Memory Module Information (Obsolete)
7	Cache Information
8	Port Connector Information
9	System Slots
10	On Board Devices Information
11	OEM Strings
12	System Configuration Options
13	BIOS Language Information
14	Group Associations
15	System Event Log
16	Physical Memory Array
17	Memory Device
18	32-Bit Memory Error Information
19	Memory Array Mapped Address
20	Memory Device Mapped Address
21	Built-in Pointing Device
22	Portable Battery
23	System Reset
24	Hardware Security
25	System Power Controls
26	Voltage Probe
27	Cooling Device
28	Temperature Probe
29	Electrical Current Probe
30	Out-of-Band Remote Access
31	Boot Integrity Services (BIS) Entry Point
32	System Boot Information
33	64-Bit Memory Error Information
34	Management Device
35	Management Device Component
36	Management Device Threshold Data
37	Memory Channel
38	IPMI Device Information
39	System Power Supply
40	Additional Information
41	Onboard Devices Extended Information
42	Management Controller Host Interface
126	Inactive
127	End-of-Table
128-255	Available for system- and OEM- specific information

The -t takes numbers, comma separated lists of number and case insensitive symbolic names thus:

*Symbol*	*Types*
bios	0,13
system	1,12,15,23,32
baseboard	2,10,41
chassis	3
processor	4
memory	5,6,16,17
cache	7
connector	8
slot	9

The following are all equivalent:

dmidecode --type 1 -t 12 -t 15,23,32

dmidecode --type 1,12,15,23,32

dmidecode -t system

dmidecode --type SysteM

BINARY DUMP FILE FORMAT

The binary dump files are an on disk representation of the SMBIOS table with the exception that the DMI table is relocated to be at offset 0x20. The SMBIOS entry begins at offset zero. The binary file is interopable with the non-GNU tool of the same name. http://www.nongnu.org/dmidecode/

AVAILABILITY

PTC MKS Toolkit for Power Users
PTC MKS Toolkit for System Administrators
PTC MKS Toolkit for Developers
PTC MKS Toolkit for Interoperability
PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

dmidecode
Render System Management BIOS data in human readable form

Command