How do I change BIOS settings in Linux?
Emily Wilson
Updated on March 15, 2026
How do I change BIOS settings in Linux?
Power the system on and quickly press the “F2” button until you see the BIOS setting menu. Under the General Section > Boot Sequence, make sure that the dot is selected for UEFI. Under the System Configuration Section > SATA Operation, make sure that the dot is selected for AHCI.
Can I change BIOS settings from CMD?
How can I change BIOS settings from CMD? You can access BIOS from cmd by: Click on the “Start” menu and select “Run.” Type “D:/>wmic bios get /format:list” to bring up a list of the BIOS settings.
How do I get into the BIOS in Linux?
Checking your current BIOS version
- The current BIOS version can be checked by this command from Ubuntu: sudo dmidecode -s bios-version.
- The current BIOS release date can be obtained by invoking: sudo dmidecode -s bios-release-date.
How do I open BIOS from command prompt?
Using the Command Prompt in Windows
- Type CMD in the search box. Select Command Prompt or CMD.
- The Command Prompt window appears. Type wmic bios get smbiosbiosversion and then press Enter. The string of letters and numbers following SMBBIOSBIOSVersion is the BIOS version. Write down the BIOS version number.
How do I change the boot order in Linux?
Change grub boot order To change the boot order, prioritize a different OS or kernel configuration edit the file /etc/default/grub using any text editor you want. You can edit it using nano, as shown in the example below. Remember, you need superuser privileges to edit the grub configuration file.
Can I access BIOS from command prompt?
How do I change my BIOS settings without rebooting?
How to enter BIOS without restart the computer
- Click >Start.
- Go to Section >Settings.
- Find and open >Update & Security.
- Open the menu >Recovery.
- In the Advance startup section, select >Restart now.
- In recovery mode, select and open >Troubleshoot.
- Select >Advance option.
- Find and select >UEFI Firmware Settings.
How do I get to the BIOS menu in Ubuntu?
Ordinarily, to get into BIOS, immediately following physically switching the machine on, you need to press the F2 button repeatedly (not via a single continuous single press) until the bios appears. If that does not work, you should press the ESC key repeatedly instead.
How do I reset my BIOS settings?
Reset the BIOS to Default Settings (BIOS)
- Access the BIOS Setup utility. See Accessing BIOS.
- Press the F9 key to automatically load the factory default settings.
- Confirm the changes by highlighting OK, then press Enter.
- To save the changes and exit the BIOS Setup utility, press the F10 key.
How do I check my BIOS settings?
In order to access BIOS on a Windows PC, you must press your BIOS key set by your manufacturer which could be F10, F2, F12, F1, or DEL. If your PC goes through its power on self-test startup too quickly, you can also enter BIOS through Windows 10’s advanced start menu recovery settings.
How do I get to UEFI from command prompt?
Option 3: Access UEFI BIOS Setup from Command Prompt
- Open the elevated Command Prompt, then run the following command: shutdown /r /fw.
- You’ll get a popup that says Windows is about to sign you out. Click Close.
- Your PC will now restart directly to UEFI settings.
How to view BIOS settings from the command line on Linux?
How to view BIOS setting from the command line on Linux. Open the terminal application. You must login as root to run command: $ sudo -i. OR. $ su -. Type the following command: # dmidecode | more. Sample outputs:
How can I change BIOS settings from CMD?
How can I change BIOS settings from CMD? You can access BIOS from cmd by: Click on the “Start” menu and select “Run.” Type “D:/>wmic bios get /format:list” to bring up a list of the BIOS settings. and it can be edited in the same way as at start-up
Is it possible to view BIOS settings without rebooting the server?
I wanted to view the BIOS settings from Linux command line itself. I wanted to avoid downtime. Is it possible to see BIOS settings without rebooting the server? You can use the biosdecode and dmidecode commands to get BIOS settings from the CLI. The biosdecode command parses the BIOS memory and prints information about all structures.
How does the BIOS upgrade work?
The BIOS upgrade mechanism works by leaving a signed update package to the BIOS — BIOS memory is writeable only directly after a reboot, and a write protection mechanism that only unlocks during a system-wide reset is set up before starting any OS code. On HPE servers you can change settings using utility called conrep.