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Win32_BIOS class

The Win32_BIOS WMI classrepresents the attributes of the computer system's basic input/output services (BIOS) that are installed on a computer.

The following syntax is simplified from Managed Object Format (MOF) code and includes all of the inherited properties. Properties are listed in alphabetic order, not MOF order.

Syntax

[Dynamic, Provider("CIMWin32"), UUID("{8502C4E1-5FBB-11D2-AAC1-006008C78BC7}"), AMENDMENT]
class Win32_BIOS : CIM_BIOSElement
{
  uint16   BiosCharacteristics[];
  string   BIOSVersion[];
  string   BuildNumber;
  string   Caption;
  string   CodeSet;
  string   CurrentLanguage;
  string   Description;
  uint8    EmbeddedControllerMajorVersion;
  uint8    EmbeddedControllerMinorVersion;
  string   IdentificationCode;
  uint16   InstallableLanguages;
  datetime InstallDate;
  string   LanguageEdition;
  String   ListOfLanguages[];
  string   Manufacturer;
  string   Name;
  string   OtherTargetOS;
  boolean  PrimaryBIOS;
  datetime ReleaseDate;
  string   SerialNumber;
  string   SMBIOSBIOSVersion;
  uint16   SMBIOSMajorVersion;
  uint16   SMBIOSMinorVersion;
  boolean  SMBIOSPresent;
  string   SoftwareElementID;
  uint16   SoftwareElementState;
  string   Status;
  uint8    SystemBiosMajorVersion;
  uint8    SystemBiosMinorVersion;
  uint16   TargetOperatingSystem;
  string   Version;
};

Members

The Win32_BIOS class has these types of members:

Properties

The Win32_BIOS class has these properties.

BiosCharacteristics
Data type: uint16 array
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 0|BIOS Characteristics")

Array of BIOS characteristics supported by the system as defined by the System Management BIOS Reference Specification.

ValueMeaning
Reserved
0
Reserved
1
Unknown
2
BIOS Characteristics Not Supported
3
ISA is supported
4
MCA is supported
5
EISA is supported
6
PCI is supported
7
PC Card (PCMCIA) is supported
8
Plug and Play is supported
9
APM is supported
10
BIOS is Upgradeable (Flash)
11

BIOS is Upgradable (Flash)

BIOS shadowing is allowed
12
VL-VESA is supported
13
ESCD support is available
14
Boot from CD is supported
15
Selectable Boot is supported
16
BIOS ROM is socketed
17
Boot From PC Card (PCMCIA) is supported
18
EDD (Enhanced Disk Drive) Specification is supported
19
Int 13h - Japanese Floppy for NEC 9800 1.2mb (3.5\", 1k Bytes/Sector, 360 RPM) is supported
20

Int 13h - Japanese Floppy for NEC 9800 1.2mb (3.5, 1k Bytes/Sector, 360 RPM) is supported

Int 13h - Japanese Floppy for Toshiba 1.2mb (3.5\", 360 RPM) is supported
21

Int 13h - Japanese Floppy for Toshiba 1.2mb (3.5, 360 RPM) is supported

Int 13h - 5.25\" / 360 KB Floppy Services are supported
22

Int 13h - 5.25 / 360 KB Floppy Services are supported

Int 13h - 5.25\" /1.2MB Floppy Services are supported
23

Int 13h - 5.25 /1.2MB Floppy Services are supported

Int 13h - 3.5\" / 720 KB Floppy Services are supported
24

Int 13h - 3.5 / 720 KB Floppy Services are supported

Int 13h - 3.5\" / 2.88 MB Floppy Services are supported
25

Int 13h - 3.5 / 2.88 MB Floppy Services are supported

Int 5h, Print Screen Service is supported
26
Int 9h, 8042 Keyboard services are supported
27
Int 14h, Serial Services are supported
28
Int 17h, printer services are supported
29
Int 10h, CGA/Mono Video Services are supported
30
NEC PC-98
31
ACPI supported
32

ACPI is supported

USB Legacy is supported
33
AGP is supported
34
I2O boot is supported
35
LS-120 boot is supported
36
ATAPI ZIP Drive boot is supported
37
1394 boot is supported
38
Smart Battery supported
39

Smart Battery is supported

40:47

Reserved for BIOS vendor

48:63

Reserved for system vendor

 

BIOSVersion
Data type: string array
Access type: Read-only

Windows Server 2003:  Array of the complete system BIOS information. In many computers there can be several version strings that are stored in the registry and represent the system BIOS information.

BuildNumber
Data type: string
Access type: Read-only

Internal identifier for this compilation of this software element. This property is inherited from CIM_SoftwareElement.

Caption
Data type: string
Access type: Read-only

Short description of the object—a one-line string. This property is inherited from CIM_ManagedSystemElement.

CodeSet
Data type: string
Access type: Read-only
Qualifiers: MaxLen (64)

Code set used by this software element. This property is inherited from CIM_SoftwareElement.

CurrentLanguage
Data type: string
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 13|Current Language")

Name of the current BIOS language.

Description
Data type: string
Access type: Read-only

Description of the object. This property is inherited from CIM_ManagedSystemElement.

EmbeddedControllerMajorVersion
Data type: uint8
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 0|Embedded Controller Firmware Major Release")

The major release of the embedded controller firmware.

Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008 R2, Windows 7, Windows Server 2008, Windows Vista, and Windows Server 2003:  This property is not supported.

EmbeddedControllerMinorVersion
Data type: uint8
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 0|Embedded Controller Firmware Minor Release")

The minor release of the embedded controller firmware.

Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008 R2, Windows 7, Windows Server 2008, Windows Vista, and Windows Server 2003:  This property is not supported.

IdentificationCode
Data type: string
Access type: Read-only
Qualifiers: MaxLen (64)

Manufacturer's identifier for this software element. Often this will be a stock keeping unit (SKU) or a part number. This property is inherited from CIM_SoftwareElement.

InstallableLanguages
Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 13|Installable Languages")

Number of languages available for installation on this system. Language may determine properties such as the need for Unicode and bidirectional text.

InstallDate
Data type: datetime
Access type: Read-only

Date and time the object was installed. This property does not need a value to indicate that the object is installed. This property is inherited from CIM_ManagedSystemElement.

LanguageEdition
Data type: string
Access type: Read-only
Qualifiers: MaxLen (32)

Language edition of this software element. The language codes defined in ISO 639 should be used. Where the software element represents a multilingual or international version of a product, the string "multilingual" should be used. This property is inherited from CIM_SoftwareElement.

ListOfLanguages
Data type: String array
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 13|Language Strings")

Array of names of available BIOS-installable languages.

Manufacturer
Data type: string
Access type: Read-only

Manufacturer of this software element. This property is inherited from CIM_SoftwareElement.

Name
Data type: string
Access type: Read-only
Qualifiers: Key, MaxLen (256)

Name used to identify this software element. This property is inherited from CIM_ManagedSystemElement.

OtherTargetOS
Data type: string
Access type: Read-only
Qualifiers: MaxLen (64)

Records the manufacturer and operating system type for a software element when the TargetOperatingSystem property has a value of 1 (Other). When TargetOperatingSystem has a value of 1, OtherTargetOS must have a nonnull value. For all other values of TargetOperatingSystem, OtherTargetOS is NULL. This property is inherited from CIM_SoftwareElement.

PrimaryBIOS
Data type: boolean
Access type: Read-only

If TRUE, this is the primary BIOS of the computer system. This property is inherited from CIM_BIOSElement.

ReleaseDate
Data type: datetime
Access type: Read-only

Release date of the Windows BIOS in the Coordinated Universal Time (UTC) format of YYYYMMDDHHMMSS.MMMMMM(+-)OOO.

SerialNumber
Data type: string
Access type: Read-only

Assigned serial number of the software element. This property is inherited from CIM_SoftwareElement.

SMBIOSBIOSVersion
Data type: string
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 0|BIOS Version")

BIOS version as reported by SMBIOS.

SMBIOSMajorVersion
Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|CSMBios|GetVersion")

Major SMBIOS version number. This property is NULL if SMBIOS is not found.

SMBIOSMinorVersion
Data type: uint16
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|CSMBios|GetVersion")

Minor SMBIOS version number. This property is NULL if SMBIOS is not found.

SMBIOSPresent
Data type: boolean
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|CSMBios|Init")

If true, the SMBIOS is available on this computer system.

SoftwareElementID
Data type: string
Access type: Read-only

Identifier for this software element; designed to be used in conjunction with other keys to create a unique representation of this CIM_SoftwareElement instance. This property is inherited from CIM_SoftwareElement.

SoftwareElementState
Data type: uint16
Access type: Read-only

State of a software element. This property is inherited from CIM_SoftwareElement.

ValueMeaning
0

Deployable

1

Installable

2

Executable

3

Running

 

Status
Data type: string
Access type: Read-only
Qualifiers: MaxLen (10)

Current status of the object. Various operational and nonoperational statuses can be defined. Operational statuses include: "OK", "Degraded", and "Pred Fail" (an element, such as a SMART-enabled hard disk drive, may be functioning properly but predicting a failure in the near future). Nonoperational statuses include: "Error", "Starting", "Stopping", and "Service". The latter, "Service", could apply during mirror-resilvering of a disk, reload of a user permissions list, or other administrative work. Not all such work is online, yet the managed element is neither "OK" nor in one of the other states. This property is inherited from CIM_ManagedSystemElement.

The values are:

"OK"
"Error"
"Degraded"
"Unknown"
"Pred Fail"
"Starting"
"Stopping"
"Service"
"Stressed"
"NonRecover"
"No Contact"
"Lost Comm"
SystemBiosMajorVersion
Data type: uint8
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 0|System BIOS Major Release")

The major release of the System BIOS.

Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008 R2, Windows 7, Windows Server 2008, Windows Vista, and Windows Server 2003:  This property is not supported.

SystemBiosMinorVersion
Data type: uint8
Access type: Read-only
Qualifiers: MappingStrings ("SMBIOS|Type 0|System BIOS Minor Release")

The minor release of the System BIOS.

Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008 R2, Windows 7, Windows Server 2008, Windows Vista, and Windows Server 2003:  This property is not supported.

TargetOperatingSystem
Data type: uint16
Access type: Read-only

Target operating system of the owning software element. This property is inherited from CIM_SoftwareElement. The possible values for this property are as follows.

ValueMeaning
0

Unknown

1

Other

2

MACOS

3

ATTUNIX

4

DGUX

5

DECNT

6

Digital Unix

7

OpenVMS

8

HPUX

9

AIX

10

MVS

11

OS400

12

OS/2

13

JavaVM

14

MSDOS

15

WIN3x

16

WIN95

17

WIN98

18

WINNT

19

WINCE

20

NCR3000

21

NetWare

22

OSF

23

DC/OS

24

Reliant UNIX

25

SCO UnixWare

26

SCO OpenServer

27

Sequent

28

IRIX

29

Solaris

30

SunOS

31

U6000

32

ASERIES

33

TandemNSK

34

TandemNT

35

BS2000

36

LINUX

37

Lynx

38

XENIX

39

VM/ESA

40

Interactive UNIX

41

BSDUNIX

42

FreeBSD

43

NetBSD

44

GNU Hurd

45

OS9

46

MACH Kernel

47

Inferno

48

QNX

49

EPOC

50

IxWorks

51

VxWorks

52

MiNT

53

BeOS

54

HP MPE

55

NextStep

56

PalmPilot

57

Rhapsody

58

Windows 2000

59

Dedicated

60

VSE

61

TPF

 

Version
Data type: string
Access type: Read-only
Qualifiers: Override ("Version") , Mappingstrings ("Win32Registry|HARDWARE\\Description\\System|SystemBiosVersion")

Version of the BIOS. This string is created by the BIOS manufacturer. This property is inherited from CIM_SoftwareElement.

Remarks

The Win32_BIOS class is derived from CIM_BIOSElement.

Examples

The Get-ComputerInfo - Query Computer Info From Local/Remote Computers - (WMI) PowerShell sample on TechNet Gallery uses a number of calls to hardware and software, including Win32_BIOS, to display information about a local or remote system.

The Generate system information as XML hierarchy VBScript sample on TechNet Gallery uses a number of calls to hardware and software, including Win32_BIOS, to generate an XML representation of a system using a manual XML output.

The following PowerShell code sample uses Win32_BIOS to return characteristics of the BIOS


# wmi-win32_bios.ps1
# Demonstrates use of Win32_Bios WMI class
# Thomas Lee - tfl@psp.co.uk



# Helper function to return characterics of the BIOS
function get-WmiBiosCharacteristics {
param ([uint16] $char)

# parse and return values

If ($char -le 39) {

switch ($char) {
0   {"00-Reserved"}
1   {"01-Reserved"}
2   {"02-Unknown"}
3   {"03-BIOS Characteristics Not Supported"}
4   {"04-ISA is supported"}
5   {"05-MCA is supported"}
6   {"06-EISA is supported"}
7   {"07-PCI is supported"}
8   {"08-PC Card (PCMCIA) is supported"}
9   {"09-Plug and Play is supported"}
10  {"10-APM is supported"}
11  {"11-BIOS is Upgradable (Flash)"}
12  {"12-BIOS shadowing is allowed"}
13  {"13-VL-VESA is supported"}
14  {"14-ESCD support is available"}
15  {"15-Boot from CD is supported"}
16  {"16-Selectable Boot is supported"}
17  {"17-BIOS ROM is socketed"}
18  {"18-Boot From PC Card (PCMCIA) is supported"}
19  {"19-EDD (Enhanced Disk Drive) Specification is supported"}
20  {"20-Int 13h - Japanese Floppy for NEC 9800 1.2mb (3.5, 1k Bytes/Sector, 360 RPM) is supported"}
21  {"21-Int 13h - Japanese Floppy for Toshiba 1.2mb (3.5, 360 RPM) is supported"}
22  {"22-Int 13h - 5.25 / 360 KB Floppy Services are supported"}
23  {"23-Int 13h - 5.25 /1.2MB Floppy Services are supported"}
24  {"24-Int 13h - 3.5 / 720 KB Floppy Services are supported"}
25  {"25-Int 13h - 3.5 / 2.88 MB Floppy Services are supported"}
26  {"26-Int 5h, Print Screen Service is supported"}
27  {"27-Int 9h, 8042 Keyboard services are supported"}
28  {"28-Int 14h, Serial Services are supported"}
29  {"29-Int 17h, printer services are supported"}
30  {"30-Int 10h, CGA/Mono Video Services are supported"}
31  {"31-NEC PC-98"}
32  {"32-ACPI supported"}
33  {"33-USB Legacy is supported"}
34  {"34-AGP is supported"}
35  {"35-I2O boot is supported"}
36  {"36-LS-120 boot is supported"}
37  {"37-ATAPI ZIP Drive boot is supported"}
38  {"38-1394 boot is supported"}
39  {"39-Smart Battery supported"}
}
Return
}

If ($char -ge 40 -and $char -le 45) {
          "{0}-Reserved for BIOS vendor" -f $char
return
}

If ($char -ge 48 -and $char -le 63) {
           "{0}-Reserved for system vendor" -f $char
return
}
"{0}-Unknown Value " -f $char
}

# Get BIOS information from WMI
$bios = Get-WMIObject Win32_Bios

# Display BIOS Details
"Win32_Bios WMI Information"
"Bios Characteristics"
foreach ($ch in $bios.BiosCharacteristics) {
"                      :  {0}" -f  (Get-WmiBiosCharacteristics($ch))
} 
"Bios Version          :  {0}" -f $bios.BiosVersion
"Codeset               :  {0}" -f $bios.Codeset
"CurrentLanguage       :  {0}" -f $bios.CurrentLanguage
"Description           :  {0}" -f $bios.Description
"IdentificatonCode     :  {0}" -f $bios.IdentificatonCode
"InstallableLanguages  :  {0}" -f $bios.InstallableLanguages
"InstallDate           :  {0}" -f $bios.InstallDate 
"LanguageEdition       :  {0}" -f $bios.LanguageEdition
"ListOfLanguages       :  {0}" -f $bios.ListOfLanguages
"Manufacturer          :  {0}" -f $bios.Manufacturer
"OtherTargetOS         :  {0}" -f $bios.OtherTargetOS
"PrimaryBIOS           :  {0}" -f $bios.PrimaryBIOS
"ReleaseDate           :  {0}" -f $bios.ReleaseDate
"SerialNumber          :  {0}" -f $bios.SerialNumber
"SMBIOSBIOSVersion     :  {0}" -f $bios.SMBIOSBIOSVersion
"SMBIOSMajorVersion    :  {0}" -f $bios.SMBIOSMajorVersion
"SMBIOSMinorVersion    :  {0}" -f $bios.SMBIOSMinorVersion
"SoftwareElementID     :  {0}" -f $bios.SoftwareElementID 
"SoftwareElementState  :  {0}" -f $bios.SoftwareElementState
"TargetOperatingSystem :  {0}" -f $bios.TargetOperatingSystem
"Version               :  {0}" -f $bios.Version 


The previous code sample returns the following information:


Win32_Bios WMI Information
Bios Characteristics
                      :  04-ISA is supported
                      :  07-PCI is supported
                      :  08-PC Card (PCMCIA) is supported
                      :  09-Plug and Play is supported
                      :  11-BIOS is Upgradable (Flash)
                      :  12-BIOS shadowing is allowed
                      :  15-Boot from CD is supported
                      :  16-Selectable Boot is supported
                      :  24-Int 13h - 3.5 / 720 KB Floppy Services are supported
                      :  26-Int 5h, Print Screen Service is supported
                      :  27-Int 9h, 8042 Keyboard services are supported
                      :  28-Int 14h, Serial Services are supported
                      :  29-Int 17h, printer services are supported
                      :  30-Int 10h, CGA/Mono Video Services are supported
                      :  32-ACPI supported
                      :  33-USB Legacy is supported
                      :  34-AGP is supported
                      :  39-Smart Battery supported
                      :  40-Reserved for BIOS vendor
                      :  41-Reserved for BIOS vendor
                      :  42-Reserved for BIOS vendor
                      :  58-Reserved for system vendor
                      :  74-Unknown Value
Bios Version          :  DELL   - 27d60a0d
Codeset               :
CurrentLanguage       :  en|US|iso8859-1
Description           :  Phoenix ROM BIOS PLUS Version 1.10 A04
IdentificatonCode     :
InstallableLanguages  :  1
InstallDate           :
LanguageEdition       :
ListOfLanguages       :  en|US|iso8859-1
Manufacturer          :  Dell Inc.
OtherTargetOS         :
PrimaryBIOS           :  True
ReleaseDate           :  20061013000000.000000+000
SerialNumber          :  DDC2H2J
SMBIOSBIOSVersion     :  A04
SMBIOSMajorVersion    :  2
SMBIOSMinorVersion    :  4
SoftwareElementID     :  Phoenix ROM BIOS PLUS Version 1.10 A04
SoftwareElementState  :  3
TargetOperatingSystem :  0
Version               :  DELL   - 27d60a0d

Requirements

Minimum supported client

Windows Vista

Minimum supported server

Windows Server 2003

Namespace

Root\CIMV2

MOF

CIMWin32.mof

DLL

CIMWin32.dll

See also

CIM_BIOSElement
Computer System Hardware Classes

 

 

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