Under Linux operating systems use the dmidecode command to check system BIOS information. The output from the dmidecode command include the BIOS version, Bios release date, BIOS vendor, BIOS language and other BIOS characteristics available on the system.
Type the following command as root
# dmidecode --type bios
Output
SMBIOS 2.4 present.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Phoenix Technologies LTD
Version: 6.00
Release Date: 10/13/2009
Address: 0xEA2E0
Runtime Size: 89376 bytes
ROM Size: 64 kB
Characteristics:
ISA is supported
PCI is supported
PC Card (PCMCIA) is supported
PNP is supported
APM is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
USB legacy is supported
Smart battery is supported
BIOS boot specification is supported
Targeted content distribution is supported
BIOS Revision: 4.6
Firmware Revision: 0.0
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