The Unified Extensible Firmware Interface BIOS (UEFI) is a specification that defines a software interface between an operating system and platform firmware. UEFI is a replacement for the older BIOS firmware interface present in all IBM PC-compatible personal computers

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How to access UEFI/BIOS if Windows doesn't work anymore?

I have a Lenovo X230 with Windows 10 installed. At first, I noticed I installed W10 with the legacy boot option and decided to reinstall it using the UEFI boot option instead. Now that W10 is ...
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28 views

Is there any reason to use UEFI with Windows 10?

Or another way of putting it, will I be impacted in any way if I use legacy BIOS mode with Windows 10? I'm not fond of having a new complex software layer underneath my OS especially with the recent ...
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24 views

Booting Windows 10 with bootia32.efi on a 64-bit UEFI System

I have downloaded Windows 10 AIO disk but it has only the bootia32.efiwhich can be booted only 32-bit Systems & not on 64-bit. I have browsed around the internet and found some suggestions that ...
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1answer
30 views

UEFI BIOS won't recognize USB

I recently tried to install Kali Linux from a live USB. This didn't go too well. I used Rufus to create a live cd on my USB from the Kali Linux ISO. Then I rebooted, and went into BIOS to boot from ...
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1answer
19 views

Can I add Windows to my systemd-boot bootloader if I have separate EFI partitions?

I've just installed Arch Linux on to a new set of partitions on my Windows 8 machine. In doing so, I created a new 512MB EFI partition for Linux to load from, leaving the existing Windows EFI ...
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19 views

UEFI Secure Boot Keys

Out of curiosity to understand Secure Boot, I explored Tianocore’s OVMF along with QEMU virtual system on Linux. I could experiment & see how Secure boot prevents unsigned efi file from running ...
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2answers
303 views

After Windows 10 upgrade I can no longer access BIOS

I posted a question recently regarding my Windows 10 upgrade which ended up with a black screen and cursor. QUESTION I reverted back to Windows 8.1 using the "Revert to previous build" option in ...
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1answer
19 views

PXE boot in uefi mode

I'm building a pxeboot server and including both legacy boot and uefi boot options. The legacy boot works perfectly but while doing an installation in uefi mode, the client machine network boots, ...
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138 views

Installed Ubuntu next to Windows 10 caused nothing to boot anymore

The following broke my PC. Installed Windows 10 Education x64 final release Booted Ubuntu 15.04 install disc Installed Ubuntu with option to install next to Windows Installation said it has been ...
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0answers
27 views

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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10 views

UEFI on HP laptop

I have a HP Pavilion dv6-6c05er laptop. There is some "driver" called "UEFI support tools" on the official site, but it doesn't help me to use a UEFI instead of BIOS. Also BIOS menu is very shabby and ...
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18 views

Adding a windows partition to an existing Linux GPT/UEFI drive

I have a working Linux system that boots from a GPT/UEFI drive. I would like to add a windows partition to this drive, without destroying the existing boot system in the process. Theoretically, I ...
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1answer
189 views

How to test whether Windows 10 was installed with UEFI?

I need to decide whether it is more straightforward to create a bootable Ubuntu drive in UEFI or standard BIOS. I do not want to create or install it through any more ambiguous route than necessary ...
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42 views

Windows USB EFI boot files

I've been trying to boot up my Win7 USB stick into EFI mode as the disk I want to install it on, is GPT. I have tried to modify the installation media (including copy bootmgr.efi, bootx64.efi and ...
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1answer
41 views

boot loader(GRUB) not recognized in partition along with windows boot manager

First, I'll explain my situation Device: ASUS x205ta with 32GB eMMC (Windows 8.1+Bing installed). Lets call this /dev/mmcblk0 usb flash drive: 64GB Sandisk ultra. installed Ubuntu 14.04. Lets call ...
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1answer
50 views

ubuntu installation on usb flash drive will not boot

here's the partitioning I've done during ubuntu install https://youtu.be/BcRnqqybMIQ installing OS: Ubuntu 14.04 64bit AMD64 device: Asus x205ta ubuntu bootable usb drive created and BOOTIA32.EXE ...
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1answer
44 views

ASUS Q502L “no battery detected” - Windows 8.1

I bought the specified model about one month ago. I immediately upgraded HDD to SSD and my system seemed to work fine for three weeks. I left my computer in my car one morning, and when I tried to use ...
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0answers
37 views

Using motherboard splash screen during Linux boot

Windows 8.1 with UEFI uses the motherboard manufacturer's splash screen while booting. This results in a feeling of extra smooth boot process. How can I get this behavior with under a Linux system? ...
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41 views

To which extent will bitlocker affect my boot chain

My laptop has the following setup: uefi (no secure boot) gpt ssd custom bootmanager (refind, similar to grub) leading to windows 8.1 (via windows bootloader) and a varying linux distro (via grub) ...
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38 views

Cant navigate UEFI menu on my tablet.. Accidently disabled USB

I own a no-brand Windows tablet that has only a single USB port, which I connect a keyboard that has an inbuilt USB hub where i put the USB with the image. I am running Windows 8.1 x64. Not sure on ...
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1answer
33 views

Images (e.g. with Clonezilla) of Windows and Linux on a UEFI computer

I use Clonezilla with success for many years to make images from partitions that host Windows 7 or smaller and Ubuntu and other operating systems. Making images and restore them was easy for me. But ...
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13 views

Can I delete the BIOSUPDATE partition (with ASrock z87)?

I found a partition on my secondary (!) storage drive, not the system storage drive: As you can see it is in the way of easy repartitioning. I have an ASRock Z87 Mainboard, used the update Bios via ...
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1answer
42 views

Bootable usb not recognized in UEFI disabled mode unable to dual boot

I want to dual boot my laptop(lenovo G580). It currently has windows 8.1(unactivated). Now I also want to install ubuntu 14.04 64-bit, so basically I was trying to dual boot using bootable usb drive. ...
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25 views

How do I replace the dump of my USB recovery media with a more simple EFI partition in this situation?

The situation is as follows: this is a new Dell Precision M3800; it comes with a Windows 8.1 pro version and a USB recovery medium; the machine uses UEFI; I immediately scratched Windows and ...
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64 views

Lenovo ideapad u410: Bios in UEFI mode failed after update

I updated the Bios (65cn99ww.exe) to laptop Lenovo Ideapad U410 (Windows 8), and after computer restarted itself: the system couldn't start, it tried to repair the system on booting, The bios shows ...
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1answer
49 views

Upgrading Win 8.1 to win 8.1 enterprise, USB boot

I know that Win 8.1 (Basic Pack) cannot be upgraded to Win 8.1 enterprise directly, by "add features to 8.1". I have the 8.1 enterprise image (ISO) and my very own product key. Here is the problem: ...
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2answers
37 views

I can no longer access the BIOS (Computer Freezes)

I have a new Lenovo T440 with Windows 8.1, I have installed Fedora 22 to have dual boot, I started playing around with grub2-customization and some of the BIOS settings (secure boot and legacy vs ...
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1answer
12 views

window installation with usb

two days ago I bought samsung laptop I don't know Korea language Therefore I want to replace another window with English language I want to replace new window 8.1 with usb but it cann't boot how to ...
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2answers
40 views

How can an OS change the boot order?

On a machine that uses UEFI and GRUB to boot I've witnessed Windows decide to change the boot order. I thought boot order was only the business of me and my motherboard and simply non-existent in the ...
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34 views

windows 7, UEFI, and GPT woes [duplicate]

This might end up being a bit of a long question, but here it goes. I have a desktop PC that runs windows 7. A couple of years ago, I had my main drive die (C drive). I bought a brand new disk and ...
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1answer
163 views

Unable to boot Windows 8.1 UEFI USB key on XPS 13 2015

I have an XPS 13 Developer edition on witch I try to install Windows 8.1 I have already done that on others computer always with success. But I am unable to do so with this XPS. I use Rufus to ...
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69 views

Update Realtek UEFI UNDI Driver

I have a ASUS J1900 motherboard with UEFI BIOS (Realtek UEFI UNDI Driver v2.023). I downloaded archive with RtkUndiDxe.efi v 2.035. How can I update bios?
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42 views

can't enter UEFI Boot Manager on Dell R610

This system seems to have a hybrid BIOS / UEFI setup. Before doing anything, I reset the NVRAM of the machine using the Clear NVRAM jumper on the motherboard.. I can get into the BIOS, and I have ...
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3answers
71 views

Cannot restore Windows Backup Image made in Windows 8.1

I have the following Situation: Laptop is EliteBook 840G1 with 256 GB SSD (Crucial M550). Windows 8.1 with Update has been installed without CSM. I made a Backup using Windows' System Image Backup ...
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1answer
32 views

Fixing hidden recovery partitions that use UEFI

Many name brand Windows 8 computers now use UEFI and have partitions to allow for refresh and reset of Windows. Many of which I have had issues with the reset / refresh / and troubleshooting options ...
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35 views

bootable USB key cannot boot in legacy mode?

I used the netbootin to generate a Mint 17.1 live USB on a EFI kubuntu system. It can be boot in computer with UEFI mode. However, if I change to legacy mode, the live USB cannot boot at all. Is ...
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1answer
32 views

Can Linux OS Boot off MBR in Native UEFI?

While UEFI & GPT go together, I was wondering if Linux can be instilled and boot off MBR Partition type while in Native UEFI Mode?
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1answer
937 views

Does UEFI potentially leak encryption keys?

I just built my first computer in years and for the first time I now have an UEFI mainboard. I installed Windows 7 in legacy mode and encrypted my system partition with Truecrypt. Recently there was ...
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2answers
81 views

How to delete OS from boot menu

After installing fedora and Centos and other OS now I have them all showing in my Boot menu [F2] on start up not the menu form the OS even after deleting them and reinstaling other OS - Ubuntu -so It ...
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1answer
122 views

Windows 8.1 will not boot (HP Stream)

When I power on the laptop I'm greeted with a blue screen that reads, among other things: The operating system couldn't be loaded because the HAL is missing or contains errors Thankfully I can ...
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0answers
95 views

Debian 8 Installer (partman) doesn't detect Hard Disk Drives on Ultrabook, but all other linux commands (fdisk -l, lsblk…) does detect

I'm installing Debian 8.0.0 and 8.1.0 (both amd64) on a Ultrabook (Dell Inspiron 14z 5423) which has both a SSD and a SATA HDD. During the install, when it asks for partitioning, I choose "manual" ...
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0answers
39 views

My bios is not showing up on bootup

My Windows 7 was crashed so I tried to to boot windows 8 from usb and in bios settings I went to advanced tab and in that I just selected (USB-name)UEFI boot and then my laptop restarted automatically ...
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1answer
50 views

Can't install Linux on HP laptop - install can't see mSata SSD + HDD combo

I have an HP ENVY TouchSmart Ultrabook 4-1119tu that came with Windows 8.1, and I'm trying to add Debian Jessie in a dual-boot configuration. PREPARATION I made space on my hard-drive using a ...
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0answers
45 views

Hard disk does not show any Partitions during windows installation

I have a samusung laptop 365e which ive been using for over a year now, it's been working well but it started freezing all of a sudden during it execution. it then finally refused to boot but instead, ...
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2answers
51 views

Windows 7 refuses to install on gpt styled partitions in CMS boot mode

recently I had asked a question regarding windows 7 setip booting issues on a Toshiba windows 8 laptop. I was however able to boot into it with the boot mode set to CMS. The issue I faces was that, in ...
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1answer
38 views

Booting via network does not work with UEFI mode

I have a laptop I tried booting with PXE to install Windows using WDS. However, the network boot would fail at the TFTP section. If I disabled the network (uefi) option and went legacy network boot, ...
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144 views

Grub rescue command line, chainloading Windows 7 installer

I currently have grub2 installed on a Baytrail tablet along with Ubuntu 14.10 (64-bit) and Windows 8.1 (32-bit). The tablet comes with 32-bit UEFI only firmware, and a 64-bit atom processor. Using ...
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25 views

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?
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1answer
36 views

Do UEFI Mobos have beep codes?

My PC mobo has legacy BIOS however I am curious to know if the UEFI Mobos have beep codes like BIOS. Do they generate beep codes for any crucial failures like missing RAM or graphics etc? Thanks.
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37 views

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 ...