You can obtain information on the Basic Input/Output (BIOS) in a system running the Linux operating system, e.g., CentOS Linux, Ubuntu or another Linux distribution, using the
dmidecodecommand. E.g., you can use
dmidecode --type biosto obtain such information:
[root@localhost ~]# dmidecode --type bios # dmidecode 2.12 SMBIOS 2.3 present. Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: American Megatrends Inc. Version: 0601 Release Date: 11/30/2006 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 512 kB Characteristics: ISA is supported PCI is supported PNP is supported APM is supported BIOS is upgradeable BIOS shadowing is allowed ESCD support is available Boot from CD is supported Selectable boot is supported BIOS ROM is socketed EDD is supported 5.25"/1.2 MB floppy services are supported (int 13h) 3.5"/720 kB floppy services are supported (int 13h) 3.5"/2.88 MB floppy services are supported (int 13h) Print screen service is supported (int 5h) 8042 keyboard services are supported (int 9h) Serial services are supported (int 14h) Printer services are supported (int 17h) CGA/mono video services are supported (int 10h) ACPI is supported USB legacy is supported AGP is supported LS-120 boot is supported ATAPI Zip drive boot is supported BIOS boot specification is supported Targeted content distribution is supported BIOS Revision: 8.10 Handle 0x002D, DMI type 13, 22 bytes BIOS Language Information Language Description Format: Abbreviated Installable Languages: 1 en|US|iso8859-1 Currently Installed Language: en|US|iso8859-1 [root@localhost ~]#
Alternatively, you can use the
--sring parameter and
specify a particular option, such as BIOS vendor, as shown below:
[root@localhost ~]# dmidecode --string bios-vendor American Megatrends Inc. [root@localhost ~]# dmidecode --string bios-version 0601 [root@localhost ~]# dmidecode --string bios-release-date 11/30/2006
Note: you need to run the commands as root. On a Ubuntu system, you can run
the commands by prefixing the commands with
sudo dmidecode --type bios or
--string bios-version, and provide your password when prompted.
Otherwise you will get a "Permission denied" message.
Dmidecode is known to work on the following systems:
- Linux i386, x86-64, ia64
- FreeBSD i386, amd64
- NetBSD i386, amd64
- OpenBSD i386, amd64
- BeOS i386
- Cygwin i386
- Solaris x86
- Haiku i586
If it isn't available on your system, you can download the source code at dmidecode.