The Basic Input/Output System (BIOS), on a x86 PC, is the firmware that performs the power-on self-test (POST) and initializes hardware.

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ubuntu not starting after update-grub

I changed the default kernel in /etc/default/grub and did update-grub. Now every time the system is switched on, it opens BIOS settings. It's not showing any boot menu.
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19 views

Inability to Halt/Reboot/Shutdown

I recently installed a new linux distro on an ASUS laptop that has had its disks wiped clean beforehand. I'm using an EFI partion as my boot partition. Given I'm no expert I've been fiddling around a ...
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12 views

Questions on /dev/mem, dumping using dd, and .bin and .rom formats

Following @ack 's answer on How to dump BIOS data to a file I would like to know: 1) when one is dumping memory from /dev/mem, is the file data in binary or some other format? I have done a dump ...
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0answers
18 views

How to Reflash Toshiba Satellite L855-10P BIOS in a Linux Distro?

Hi I need to Reflash the BIOS of my Toshiba Satellite L855-10P using a Linux distro. How can one do this? I have found lots of info on how to read the BIOS (windows & Linux), dump memory from it ...
2
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1answer
33 views

how to create a bootable flash that can boot as both BIOS and UEFI?

I'm creating a bootable recovery flash and I was wondering how to create it so it can boot on both UEFI and BIOS systems? I'm experimenting with GRUB but I'm open to any other bootloader. ...
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21 views

DMP 3300MX-A embedded pc, debian 6.0 squeeze, kernel 3.2, bios watchdog and harwdare reset

I have been studying how to properly set up a watchdog on my embedded system, have read plenty of posts, but I am stuck with no solution. I've read: How to correctly configure Debian watchdog daemon ...
2
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1answer
36 views

USB keyboard won't work in Debian 8

Recently I installed debian on a separate drive on my desktop. My keyboard worked in the grub menu but not in the installation menu (I figured this was a fluke and pulled out an old ps/2 keyboard ...
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56 views

How to enable IOMMU on Gigabyte 990FXA-UD5 R5

I've enabled svm and iommu in the bios, but I get "not available" from dmesg: root@xen:~# dmesg |grep -i iommu [ 0.000000] Command line: placeholder root=UUID=0b6a99ef-b56b-4d71-9f63-4895d0276674 ...
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12 views

Check FN lock status (Dell XPS 13)

my Dell XPS 13 has a Fn-Lock (that's a key to use the Fn version of the F[1-12] keys without pressing Fn). Unfortunately, it doesn't have an indicator LED for it. setleds doesn't show it. Is there ...
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48 views

how to read all bios settings in linux programmatically

I don't think that dmidecode shows all the bios settings . Is there a way to read all the bios settings programatically in SLES?
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“BGRT Invalid Status Error 0 Expected 1” followed by permanent loading screen

After I shut down many programs at once using Alt+F4 in my Linux (Manjaro), my computer froze and I had to force shut it down. Upon rebooting, it gives me the error "BGRT Invalid Status Error 0 ...
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22 views

How to rename boot options with dual boot

I have Ubuntu and Windows 10 installed side-by-side, and the BIOS tool that's installed on the computer is called "Aptio Setup Utility". How can I rename the boot options, not just for the OS I'm ...
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1answer
87 views

How to enable IOMMU on Gigabyte GA-970-Gaming SLI-CF

I've enabled svm and iommu in the bios, but I get "not available" from dmesg: # root@xen:~# dmesg |grep -i iommu [ 0.000000] Command line: placeholder root=UUID=4965005e-54e9-47b9-92ff-...
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37 views

How to escape a BIOS failure?

While attempting to install deepin linux onto my new netbook, I worked myself into a corner that I do not know how to escape. 1) I loaded the deepin installer onto my USB stick as per instructions, ...
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1answer
44 views

Update Dell Latitude BIOS with “dd” command rather than “UNetbootin”

I'm doing these instructions. I cannot use UNetbootin, therefore I'm trying dd command instead: sudo dd if=~/Downloads/fdbasecd.iso of=/dev/sdc bs=10M After dd, the filesystem of bootable USB is ...
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45 views

Allowing GRUB to access network in BIOS mode

I want grub to fetch some configuration via tftp/http. Using efi I can do insmod efinet and net_ls_cards will list my network cards which I can configure and use. Using PXE in BIOS/legacy mode ...
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89 views

Phoenix Securecore tiano USB boot doesnt work

I've a problem with a Dell XPS 17 which I want to install Linux Mint on. I've created my USB key (which work on old pc) but it doen't recognized as USB device or removable device on my Dell. Many ...
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26 views

Why Linux can boot from GPT partition type on systems BIOS?

Why Linux can boot from GPT partition type on system with either BIOS or EFI firmware but windows or OSX can't? What's the concept behind this?
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17 views

Convert Windows BIOS based instrallation to UEFI from Cent OS live cd

I have a BIOS based Windows Server 2008R2 installation, I need to migrate this to a UEFI based installation. I was able to achieve this from a WIN PE live cd and following this link I am working on ...
3
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1answer
211 views

How does the grub efi loader find the correct grub.cfg and boot directory?

As I understand it, the uefi bios loads grub.efi from the efi partition. This now loads a bunch of grub modules and the configuration file from the /boot directory. But how does grub find the correct ...
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23 views

Are UEFI firmwares for different devices with same chipset and UEFI manufacturer compatible?

There are a few 2014-2015 devices with Intel Atom Z3745 chipset. Some of them run 32-bit Windows others run Android. The Windows ones have 32-bit UEFI. The Android ones have 64-bit UEFI. Is it ...
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1answer
63 views

Deleted grub partition from windows. Cannot enter BIOS, only shows grub terminal

I am a linux newbie. I installed elementary os freya x64 in dual boot with Windows 10 pro x64, while installing I create four partitions: /, swap, /home and biosgrub. after installation I tried ...
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4answers
915 views

How to create a bootable Debian USB drive using Windows

I'm new to this forum so sorry if I have missed any details. I am running Windows 10 and I am starting to learn how to boot from USB devices. The following is what I want to do: I have a 16gb USB 3.0 ...
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22 views

Backing up Bios / Dumping BIOS vars

I'd like to alter some VRAM numbers on my laptop—and this has lead me to modding my BIOS via an EFI shell (because, of course, there are many options locked away from the user when it comes to ...
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1answer
72 views

Does the the Thinkpads still gets bricked when installing linux?

I am thinking about buying a Thinkpad for college work, specifically the Thinkpad t540p. (The touchpad seems bad, but I heard it has amazing performance and amazing build quality). I saw a post ...
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1answer
1k views

Booting problem after trying to dual boot fedora 23 and windows 8.1 [SOLVED]

I tried to install fedora 23 on dual-boot with an usb stick today, I followed this video tutorial : https://www.youtube.com/watch?v=gOP_FtP1e9U I'm in UEFI mode, so I installed fedora and everything ...
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0answers
50 views

Boot script issue after formatting computer

I am new to Linux, currently using Linux Mint. I enjoyed it so much that I decided to ditch Windows altogether. So I formatted my entire hard disk and installed Linux Mint. I got a warning during the ...
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0answers
39 views

Scientific LInux 7 no boot menu or bios

Under Sci Linux 7 I cannot access either the boot menu or bios. I have Mint installed on a separate drive & cannot boot from it at all. I tried to boot from a Debian live DVD and a Mint live DVD, ...
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0answers
319 views

Unable to shutdown Windows after installing GRUB

(Hope this is the right place to ask this) I've a Asus ROG laptop that came with Windows 8.1 preinstalled, I upgraded it to Windows 10 and then I wanted to install Bunsenlabs Linux as dual boot. The ...
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0answers
46 views

Can grub2 on an MBR disk boot linux partitions on a GPT disk?

I have grub 2 running win 7 ultimate, win 8.1 and win 10 as well as 50 or so linux partitions that boot off of the grub 2. Can I add more entries to the grub 2 on one of the mbr disks that will boot ...
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90 views

no bios, black screen on laptop after kernel upgrade and hibernation

I am running dual boot Windows 7 and Linux Mint 17.2 on an ASUS K56. I upgraded the kernel to 4.2 the other day. Reboot and everything worked just fine. Tested browser, music player etc. Then I leave ...
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2answers
55 views

“USB HDD” option replaced by “ubuntu” in BIOS, now cannot use USB boot media

So, being foolish old me, I tried to use os-uninstaller to remove my Windows installation and make way for Arch Linux. Unfortunately, now nothing on this computer boots, and I cannot even boot from a ...
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1answer
48 views

How to install Kali?

Firstly, I tried to install Kali 2.0 from usb. Clicked install/graphicInstall. But it complained that there was no dvd disk with the packages in. Then, I went liveUSB and installed from there. I had ...
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1answer
99 views

USB not showing in Boot Menu or Bios

I am trying to boot Linux from my usb drive but it doesn't seem to show USB as an option in the bios or boot menu. pics of bios and boot menu ! http://imgur.com/a/wMu4i Any help would be ...
0
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1answer
147 views

Brightness controls not working after BIOS update

I am running Debian Jessie on my Thinkpad X220. Yesterday, after flashing a new BIOS on the laptop, the brightness keys stopped working on Debian. I can change the brightness during the BIOS bootup ...
1
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1answer
62 views

“grub” entry in BIOS after installing ElementaryOS

After installing ElementaryOS, I get the entry (to boot) named "grub". None named ElementaryOS as expected. Problem is, when going into the grub entry, I get its console (more or less like this). Am ...
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1answer
415 views

Why is windows launching instead of grub. Bad bios settings? Wrong boot loader location?

I am attempting to dual boot Linux Mint 17.2 (Cinnamon, 64 bit) and Windows 8.1 on my Acer E 15 (model # E5-573-55W1). I have successfully installed Mint, but I can't get grub to start in a ...
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0answers
31 views

How to put Linux Boot Manager in front of Windows Boot Manager?

I have set up a dual boot with Windows 10 and Arch on my laptop, but I can't move the Linux Boot Manager option from the Boot Option Menu in front of the Windows Boot Manager: I tried putting ...
0
votes
1answer
58 views

No display on power up

So I have this problem ever since I enabled secure-boot, every time I power up the screen doesn't turn on and it just hang there, I tried to access BIOS many times but no luck, CMOS reset didn't work ...
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0answers
143 views

Problems updating BIOS via Ubuntu

I have a Compaq Presario V4000 laptop currently running version F.03 BIOS. After spending a while looking through HP and Compaq's websites, Archive.org and Google, I determined that the BIOS updater ...
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2answers
108 views

Optimal BIOS CPU power config for performant Hadoop?

I'm in the process of setting up a Hadoop cluster and have so far been unable to find a good answer for how to configure CPU power in the BIOS for Linux. My BIOS give a variety of options with ...
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0answers
182 views

Protective master boot record boot flag - GPT

On an HP Elitebook 8760w, the BIOS does not support GPT well and I have found that it does not like GPT formatted boot disks which is default for many *nix platform installers. FreeBSD and OpenSuse ...
0
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1answer
75 views

Can't find eth0 in my ifconfig output

I have a old desktop with ASUS P5KPL AM/PS board with intel core2Duo processor. I have installed kali linux on it when I run ifconfig in root shell all I can see l0which is my loopback address and ...
0
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1answer
40 views

Laptop doesn' t want to wake up

My laptop (Notebook HP Pavilion g7t-1100 CTO) have been working fine till today, I enabled Virtual Technology in BIOS and from that time laptop doesn't want to wake up after I slept it. When I disable ...
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136 views

Easy way to compare BIOS information between two machines?

I have two machines - machineA and machineB running Ubuntu 12.04 Is there any easy way I can compare BIOS settings between those two machine and see the difference instead of doing it manually using ...
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2answers
383 views

dmidecode - what is the “system”?

In dmidecode types 0 BIOS Information 1 System Information 2 Baseboard (or Module) Information What is the second entry? For exmaple, First is for bios, second for Motherboard. What does ...
3
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1answer
423 views

Can I read settings in BIOS without restarting Ubuntu

Can I read my bios settings under Ubuntu without restarting? For example, I'd like to check the sleep settings in my BIOS, S3 (suspend) or S4 (hibernate). As of now, I can't hibernate, and am ...
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0answers
12 views

Fedora 16 only boots after manual drive selection [closed]

A colleague of mine recently tried to setup a RAID 1 on our Fedora 16 machine via the Disk Utiliser menu, even since then (even after tearing the raid down and removing all HDDs but the boot drive), ...
0
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1answer
745 views

Centos 6.4 and UEFI

I have centos 6.4 64. In /boot/efi/EFI/redhat I have grub.efi file (about 251Kb). However, when I execute efibootmgr I get Fatal: Couldn't open either sysfs or procfs directories for accessing ...
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2answers
1k views

Laptop boots directly to Ubuntu, can't access BIOS or Boot menu anymore

I'm running Laptop with single OS: UbuntuMATE 15.04 Beta1 64bit on Toshiba laptop Core i3. After burning "Elementary OS" on a live USB drive using UNetbootin, what happened is: -After reboot, laptop ...