Questions tagged [uefi]
The Unified Extensible Firmware Interface BIOS (UEFI) is a specification that defines a software interface between an operating system and platform firmware. UEFI replaces the Basic Input/Output System (BIOS) firmware interface originally present in all IBM PC-compatible personal computers
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Unable to access boot menu
I've been having a difficult time trying to install Ubuntu on my laptop due to a silly mistake I made earlier. During the setup process, I installed the boot loader to /dev/sda8 instead of /dev/sda ...
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Installing Windows from bootable USB pendrive on UEFI enabled machine
I have 5 year old Dell XPS 15. I have installed Windows several time one it using procedure below:
build bootable USB pendrive from Windows ISO using a Windows DVD/USB tool
plugging in USB pendrive ...
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bitlocker on/off after uefi flash and recovery key has changed?
Amendment:
I noticed that though, BL is turned off, that when I try to use recovery options in Windows 10, or when I turn off and back on the TPM in UEFI, that the BL "recovery key" from the original ...
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Triple-boot: OSX, Linux, & Windows with full disk encryption
I have a Macbook Air (MacBookAir6'2) that I want to set up a triple-boot on:
Required Operation Systems:
OSX (10.11.3)
Linux (Debian based: Elementary or Mint)
Windows 8.1 Pro
The 2 main ...
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Burned TrentaOS ISO to USB Stick: Not detected in UEFI
Well, I decided to try out the TrentaOS distribution and downloaded their ISO image from sourceforge. First, because I was on Windows, I tried to burn that image to my USB stick with Rufus, but when I ...
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How to Using Metro Boot Manager on UEFI BIOS when Dual Boot with Linux
I have a problem when trying to set up dual boot (Windows 10 + Linux Mint 17) in UEFI mode or on a GPT disk.
I cannot go back to using the default Windows 10 boot manager?
In Legacy mode or on MBR ...
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Bootloaders - Booting an MBR only OS using a UEFI only BIOS
A long time ago, in a computer lab far far away, I stumbled upon a bootloader which dared to cross the boundaries between MBR and EFI.
It's name was Clover.
Using clover, you could boot any number ...
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Windows 10 boot error
I recently created a bootable USB it using Rufus on a Windows 10 laptop in order to install Windows 10 add alongside Ubuntu for a dual boot on my desktop. I created the USB in Fat32 format. My empty ...
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Why isn't my system booting in UEFI mode?
I recently attempted to install Windows 10 as a dual boot alongside Ubuntu 14.04. I used WinUSB to create a bootable drive. I booted into the USB, but when I attempted to select the empty NTFS ...
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Zotac Nano uses lots of power while on standby and accesses USB stick - why?
I have a Zotac Nano mini PC with a UEFI firmware here.
I have noticed that when on "standby" it consumes a few Watt of power. To illustrate:
We start with the power supply disconnected (the power ...
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Why does the FreeBSD kernal crash on UEFI boot?
I recently downloaded the FreeBSD 10.2 distribution from the official website; I used the 'FreeBSD-10.2-RELEASE-amd64-uefi-memstick.img.xz' file. I used MS ImageWriter to image a USB and proceeded to ...
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Boot problems (UEFI)
I have two drives, one is a HDD, it has windows 7 and an EFI partition
the second is an SSD it has some EFI files and the BCD.
Whenever I plug the SSD in, the PC always boots from the SSD, in which ...
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UEFI but not booting directly
I was playing around with my partitions finally now it doesn't boot directly. For it to boot I need to go to HP boot menu and then choose EFI file to boot to load the OS. Something like EFI partition ...
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Virtualization with UEFI'secure boot feature
I'm interested in the notion of emulating digital signature checks in virtual machines—the host can be booted without hardware-based digital signature checks, which can be moved to the VM, and the ...
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How to Change/Remove UEFI Hard Disk Password
I am using an ASUS laptop running Windows 8 and have forgot a UEFI password. The password isn't essential to startup, for I have a user password and a master password. I know the user one, but I've ...
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Boot priority list empty
I have just bought a second hand Samsung Series 5 Ultratouch NP540U3C-A02UK. It has Phoenix SecureCore Tiano BIOS, version P07ABH. I bought it without a hard drive and when it arrived I installed the ...
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My bios is not showing up on bootup
My Windows 7 was crashed so I tried to to boot windows 8 from USB pendrive and in EFI settings I went to advanced tab and in that I just selected (USB-name)UEFI boot and then my laptop restarted ...
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Asus Access BIOS Windows 8 Instructions
For these instructions to access the BIOS from asus, when accessing the advanced startup do I need to be admin?
user407055
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UEFI multi-factor authentication on admin password?
Many UEFI vendors offer boot and Admin passwords for a local machine.
For a normal cold boot or reset, I would like the UEFI system to simply pick the properly signed bootloader and proceed.
Having ...
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Unable to enter UEFI with on boot (With F2/F12)
Symtom is somewhat like this. BIOS is broken (?)
I can still enter UEFI Setup using efibootmgr -n on Linux, however press F2 according to what shown on the screen does nothing. Same for F12 (that is ...
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How to boot USB stick in BIOS mode?
I have an UEFI-motherboard - ASUS P8Z77-MPRO. It supports CSM(Compatible Support Module). My Win7 is installed in BIOS mode, I've checked it. This because, I must install ArchLinux in the same way(...
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How to change UEFI bootmanager from EFI Shell?
When booted to the EFI shell, I see I can access the EFI variables, which contain the boot manager settings. But how do I change boot order or add new boot options while inside EFI shell?
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Flash 64-Bit UEFI on Intel Baytrail Tablet
Is it possible to flash a 64-bit UEFI on an Intel BayTrail Tablet which currently has a 32-Bit UEFI? I tried to install a 64-Bit Ubuntu 14.04 (which surprisingly worked) but after the installation my ...
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How to boot to Windows 8.1 in UEFI boot mode?
I recently installed Windows 8.1 from a USB drive. In order to boot from the USB drive, I had to disable secure boot in the BIOS and switched to Legacy boot mode (from UEFI boot mode).
After the ...
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How to install Windows 8 without flash drive and dvd? GPT/UEFI
I have my new SSD, on which I want to install Windows 8.1. I have an iso image.
So what I normally do when I use MBR on the drive:
Create partitions
Extract iso to one of the partitions
Make that ...
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Restore hardware entries in UEFI from Windows 8.1
After a missuse of efibootmgr under Centos 7, I have deleted every boot entries in UEFI, including USB, CD-ROM, DVD. So I couldn't boot anything.
I recovered Windows with the recoverer partition, but ...
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Is BIOS/UEFI used after OS startup?
I know that BIOS/UEFI is used during computer startup to boot the system and check HW and that it provides abstraction over hardware Does this mean, that the OS kernel calls BIOS/UEFI layer when the ...
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Problems with installing OS on ASUS M32AD (UEFI capable)
I have a brand new ASUS M32AD desktop computer. It came with Windows 7 Home Premium installed. After the initial configuration of Windows and some updates completed, I tried to upgrade to Windows 7 ...
BillB
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Acer Aspire keeps rebooting when bootable USB inserted
So I have an Acer Aspire V5-131 and long story short (really, it's a long story!), I decided to do a complete wipe of the HDD (using dban). So right now the HDD is absolutely wiped, there's nothing on ...
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How to change from UEFI to legacy without reinstalling Windows?
The machine has UEFI enabled. I can't boot anything except Windows; No bootable USBs. I have to change it to legacy mode, but Windows 8 won't boot in legacy mode. So the only solution I can think of ...
user300964
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How to partition hard drive from MBR to GPT for Windows 8.1 UEFI install
I just bought a new HP notebook (ProBook 450 G0) and it came preinstalled with Suse 11 Enterprise. Now this is the first time I've owned a system with an (U)EFI and I don't know how things work on ...
csergiu_ro
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New Mainboard Z97-K and OS is only bootable with the usage a LiveCD
I have a new Mainboard, CPU, Ram for his PC - a Asus Z97-K
other components like PSU, SSD, HDD are taken from the old Bios based Core2Duo PC
The OS is Linux Mint 16 and the LiveCD also - there is no ...
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Aptio Setup Utility - Cannot change boot
I am so sorry to ask this. I feel like a total idiot - Aptio Setup Utility has me licked. I just bought an ASUS X75V with Freedos, Version 2.15.1226.
The boot configuration has "Launch PXE OpROM ...
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Unable to access UEFI settings on Lenovo
I have a Lenovo G580 on which I installed Windows 8 and several Linux distros which have messed with my booting. The last I used was boot-repair tool.
I have an EFI partition on sda2. The Grub load ...
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Encrypting GPT Windows 8.1 on a multi boot system?
I have setup LVM on LUKS for my Linux partitons which I am very happy with but I would also like to encrypt Windows 8.1. I had planned to use TrueCrypt until I learned it does not support GPT. I would ...
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Trying windows 7 dual boot on a windows 8 machine
I have a ThinkPad (T530) with Windows 8.1 with one HDD and this is what I have done to achieve dual boot with Windows 7 on this machine -
On my main and only hard disk I created a new volume (...
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EFI not found when installing Debian 7.4 beside Windows 8.1
I am searching the whole time in some forums, but unfortunately I could not really get a solution. I have Windows 8.1 running on my computer, booting with UEFI.
Now I installed Debian 7.4 (basics ...
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How can I manually partition and provision a Windows 8 USB install drive with UEFI bios and GPT scheme?
For whatever reason, I cannot get the windows 7 and windows 8 usb install tools to see my usbdrive, even though my bios can. How can I manually (from elevated command prompt) partition and provision ...
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Arch Linux USB Installer Infinite Loop & How to Properly Partition a UEFI Disk Before Installing Arch Linux
I would like to install Arch Linux and am familiar with GParted and its use. However, my computer comes with Windows on it, along with an EFI system partition on /dev/sda2. This seems to be a pretty ...
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Dualboot Fedora 20 + Windows 8 on separate drives
Well hello there, I have a little problem with my dualboot setup.
So I decided to dualboot Windows (for gaming-puposes) and Fedora (for everything else), and I also decided to give them separate ...
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UEFI installing Fedora 17 after Windows 8
I recently bought an HP Pavilion G6-2313AX laptop which ships with FreeDOS.
I first partitioned it with old Ubuntu live disk to partition (I didn't have GParted CD on hand). There was an existing ...
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How do I find the storage capacity of the E²PROM chip on my motherboard? How much space is needed for UEFI to be implemented?
I'm looking at a solution for upgrading BIOS to UEFI on a motherboard that doesn't natively support UEFI. Another user, Rod Smith, replied to a question as to how this would be done stating: "It's ...
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Moving a system partition to new Hardware with Win8/UEFI, without screwing up BCD
My existing Win 8 install is historically installed on a MBR dynamic disk (that's so I can soft mirror the data partition which is on the same disk). I just bought a new motherboard/new HDD, and I ...
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How do I install Windows 8 using a GPT Partition scheme?
This question seems to have been asked in very similar form in the past, but I was unable to find a relevant answer her or elsewhere.
I am ultimately looking to install a dual boot of x64 Windows 8 ...
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Supermicro MBD-X9DRL-IF-O won't work
It works before, but after I've changed boot to "UEFI only", set boot device to "Built-in UEFI Shell" and enabled "Above 4G" (and maybe done something another), system stuck on code 92 and I can't ...
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New Samsung ATIV Book 8 - looking for advice regarding linux installation
I just bought a new laptop, Samsung ATIV Book 8, and I'm now researching how to approach installing linux alongside Windows 8. Unfortunately I have been reading Samsungs have an issue with booting ...
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Can I patch the bugs in my laptop UEFI implementation?
I have an Asus X54H-SX137D laptop, with a K54L mainboard, which supports UEFI booting (AMI Aptio 4.5). I was using BIOS mode, and all functions were working well.
In order to reap the benefits of a ...
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Can't install Windows 7 with UEFI off on GPT drive
I need to have a dual boot with Ubuntu and Windows 7 on my notebook with UEFI. I had to turn UEFI off to install and boot Ubuntu.
Now I'm trying to install Windows 7, but it says it can't be ...
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ASUS M5A97 UEFI BIOS - Where the heck are the C-State settings?
I've been getting coil whine since switching to a new PSU, and I'm worried about power stepping affecting my SSD RAID0 performance, so I did some reading and decided I needed to disable some C-States.
...
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Install Windows 7 64bit from USB drive in UEFI mode
I got a Lenovo Ideapad Y580 with Windows 8 and I want to install Windows 7 on it.
I followed the instructions on this link to create a UEFI Windows 7 Install USB flash drive - but it does not work.
I ...
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