BIOS is a firmware interface between a computer’s hardware and the operating system and like any software, it can be updated.
Knowing the BIOS version can tell you if you have the most up-to-date version of the BIOS or it has to be updated.
This note shows how to check the BIOS version in Ubuntu Linux from the command-line, though these commands should work for the other Linux systems as well.
Cool Tip: How to create a swap file in Linux! Read more →
Check BIOS Version in Linux
In Linux, to get the complete information about the computer’s BIOS from the command-line, use the
$ sudo dmidecode -t bios -q --- BIOS Information Vendor: American Megatrends Inc. Version: UX31A.219 Release Date: 06/14/2013 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 6144 kB Characteristics: PCI is supported BIOS is upgradeable BIOS shadowing is allowed 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) ACPI is supported USB legacy is supported Smart battery is supported BIOS boot specification is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 4.6 BIOS Language Information Language Description Format: Long Installable Languages: 1 en|US|iso8859-1 Currently Installed Language: en|US|iso8859-1
To check the BIOS version only, you can run the
dmidecode command as follows:
$ sudo dmidecode -s bios-version --- UX31A.219