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Questions tagged [bios]

Questions about modifying the system's BIOS to make it fit Ubuntu's need, or questions about recovering Ubuntu after a BIOS modification. Note that questions about accessing the BIOS should not be asked.

The BIOS software is built into the PC, and is the first code run by a PC when powered on ('boot firmware'). When the PC starts up, the first job for the BIOS is to initialize and identify system devices such as the video display card, keyboard and mouse, hard disk drive, optical disc drive and other hardware. The BIOS then locates boot loader software held on a peripheral device (designated as a 'boot device'), such as a hard disk or a CD/DVD, and loads and executes that software, giving it control of the PC.This process is known as booting, or booting up, which is short for bootstrapping.

BIOS vs. UEFI           BIOS vs. UEFI

1370 questions
187
votes
4 answers

How can I tell if my system was booted as EFI/UEFI or BIOS?

How do I determine whether a particular running Ubuntu system was booted using EFI/UEFI, or BIOS?
Alexander Trauzzi
  • 2,288
77
votes
2 answers

vboxdrv.sh: failed: modprobe vboxdrv failed. Please use 'dmesg' to find out why

I am having problems running VirtualBox on my Ubuntu laptop. My laptop is dual boot, and running (Windows 10 - I think, haven't used it in years), as well as Ubuntu 16.0.4 LTS. I have secure boot enabled on the BIOS settings of my laptop. I am…
Homunculus Reticulli
  • 2,553
58
votes
3 answers

How do I remove "Ubuntu" in the bios boot menu? (UEFI)

See this ubuntu appears in BIOS menu (UEFI) I have this on my Lenovo s205 too. Is there some way to remove "ubuntu" from the menu? I don't even have it installed anymore.
nvr
  • 581
54
votes
4 answers

How to know the motherboard BIOS version using the command line

How can get the BIOS version of my motherboard? The command dmidecode gives you some information about the BIOS, but I can't find what I need... I tried dmidecode command before asking and I didn't find what I needed - I want only the BIOS version…
Maythux
  • 87,123
43
votes
5 answers

SGX disabled by BIOS in Ubuntu 22.04

System information: Intel Core i5-10600K Gigabyte H510M H NVIDIA GTX 1050TI 4GB 500GB x1 NVME SSD (Installed Ubuntu), 2TB x1 HDD, 1TB x1 IDE HDD, and 250GB x1 SSD Operating system: Ubuntu 22.04 kernel 5.15.0-27-generic
Chinmay Rajyaguru
  • 613
39
votes
12 answers

How do I update the BIOS of a Dell laptop?

I have installed Ubuntu 11.10 on a vista laptop, but Dell is providing the BIOS update in .exe format currently my bios version is A09 but on the driver download site the latest version of bios is A011. Help me out to update the bios. My laptop…
gunjan parashar
  • 1,377
28
votes
3 answers

How to update the computer bios firmware without using Windows

I have a Dell Inspiron 3647 desktop with Ubuntu 20.04 LTS (Focal Fossa). How can I check the bios firmware version from inside Ubuntu and update it (if necessary) without using MS Windows?
Felipe G. M. Maia
  • 1,460
27
votes
3 answers

In a dual boot system, how does the BIOS choose which bootloader to run?

I have a dual boot of Windows and Ubuntu. When I switch on the machine, the BIOS does POST and after that the bootloader starts. I want to understand how the BIOS chooses which bootloader to run. I want to know the process going on between the BIOS…
Prashant Singh
  • 273
26
votes
3 answers

How to change ubuntu install from legacy to uefi

I was not aware of booting mode and installed ubuntu on my new x64,4 gb ram, Acer ES15 laptop in legacy mode. I read about the feature of uefi mode and would like to switch to uefi. When I boot on legacy mode, ubuntu loads up and system works fine,…
Aman Dubey
  • 361
26
votes
3 answers

How to create a bootable USB stick to flash a BIOS

I want to upgrade the BIOS on an Intel motherboard using a program called iflash2.exe, provided by Intel, which runs only on MS-DOS. I do not have Windows operating system, and I am trying to create a bootable USB stick that will contain MS-DOS,…
sawa
  • 1,403
26
votes
18 answers

GRUB not responding to keyboard

I installed Ubuntu 12.4LTS on dual boot with Windows XP on my 7 year old desktop PC 2 months ago. Everything worked perfectly in both Ubuntu and XP until last week when I removed LibreOffice from Ubuntu and installed OpenOffice 4.0.1.…
BrianW
  • 291
25
votes
6 answers

How to perform a HP BIOS upgrade with only Ubuntu?

I have a HP Spectre XT netbook. The installed BIOS is F14 and the latest one on their website is F26. I'd like to do an upgrade but they only provide a Windows executable. I tried booting with FreeDOS (using the Ultimate Boot CD), but the executable…
dargaud
  • 1,028
24
votes
3 answers

system bootOrder not found

I tried to install Ubuntu 18.04 on Acer TravelMate P278-MG, but it bootloops 1. It starts up, shows Acer logo 2. It says: System BootOrder not found. Initializing defaults. Creating boot entry "BootXXXX" with label "ubuntu" for the file…
Ilya Savitsky
  • 353
23
votes
2 answers

How do I enter BIOS

When I press the F2 key I can enter into BIOS before I change its OS (Windows 7) to Ubuntu in my Samsung 530U3C Ultrabook. But now I can't, it directly goes to Ubuntu. Can anybody help me?
Marc L.
  • 275
22
votes
2 answers

ACPI error on every boot

I recently switched from Windows 10 to Ubuntu. So far so good, but I get these errors on every boot. I was not getting these when on Windows 10 (not sure if it is because Windows didn't have these errors or Windows just hided them from me) I just…
Mustafa Öncel
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