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BIOSDECODE(8) System Manager's Manual BIOSDECODE(8)
NAME
biosdecode - BIOS information decoder
SYNOPSIS
biosdecode [OPTIONS]
DESCRIPTION
biosdecode parses the BIOS memory and prints information about all structures (or entry
points) it knows of. Currently known entry point types are:
o SMBIOS (System Management BIOS)
Use dmidecode for a more detailed output.
o DMI (Desktop Management Interface, a legacy version of SMBIOS)
Use dmidecode for a more detailed output.
o SYSID
o PNP (Plug and Play)
o ACPI (Advanced Configuration and Power Interface)
o BIOS32 (BIOS32 Service Directory)
o PIR (PCI IRQ Routing)
o 32OS (BIOS32 Extension, Compaq-specific)
See ownership for a Compaq ownership tag retrieval tool.
o SNY (Sony-specific, not decoded)
o VPD (Vital Product Data, IBM-specific)
Use vpddecode for a more detailed output.
o FJKEYINF (Application Panel, Fujitsu-specific)
biosdecode started its life as a part of dmidecode but as more entry point types were
added, it was moved to a different program.
OPTIONS
-d, --dev-mem FILE
Read memory from device FILE (default: /dev/mem)
--pir full
Decode the details of the PCI IRQ routing table
-h, --help
Display usage information and exit
-V, --version
Display the version and exit
FILES
/dev/mem
BUGS
Most of the time, biosdecode prints too much information (you don't really care about ad-
dresses) or not enough (because it doesn't follow pointers and has no lookup tables).
AUTHORS
Alan Cox, Jean Delvare
SEE ALSO
dmidecode(8), mem(4), ownership(8), vpddecode(8)
dmidecode February 2007 BIOSDECODE(8)
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On Apache
Under GNU General Public License
2025-11-21 18:03 @216.73.216.164 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)