Friday, December 28, 2018

Fedora 29 : The most common BIOS commands.

Fedora Distribution has many things that many overlook in the maintenance process.
Today I will show you some commands for your BIOS.
These are fairly common and are fairly recent.
First is efibootmgr:
[root@desk mythcat]# efibootmgr
EFI variables are not supported on this system.
The next one is dmidecode, see:
[root@desk mythcat]# dmidecode -t 11
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.4 present.
[root@desk mythcat]# dmidecode --type processor
# dmidecode 3.2
...
The dmidecode command can be used with the arg -t from 0 to 39, or you can use the --type with this keywords:
  • baseboard
  • bios
  • cache
  • chassis;
  • connector
  • memory
  • processor
  • slot
  • system
The last one I used with Fedora 29 is biosdecode.
The dmidecode and biosdecode commands are Linux distro independent and preinstalled in most of them.
Let's see commands that depend on hardware.
The vpddecode command for IBM and Lenovo hardware only, the vpd stands for vital product data.
The ownership command is for only Compaq hardware, to get Compaq specific ownership tag info.