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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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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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
103 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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29 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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31 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
37 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
34 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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36 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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35 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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0answers
34 views

How do I use the UEFI shell to mount a drive as read/write?

I have a Windows 8.1 tablet that I've bricked by trying to use Minitools Partition Editor. It has some queued partitioning tasks, but when the tablet tries to boot it crashes with a ...
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0answers
24 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
26 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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0answers
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
36 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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0answers
24 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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0answers
53 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
43 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
36 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 ...
2
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2answers
38 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
127 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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56 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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1answer
40 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
67 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
28 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
30 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?
7
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1answer
931 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
68 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
95 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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85 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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38 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
46 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
44 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
45 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
36 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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125 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
35 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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36 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 ...
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1answer
90 views

Dual boot openSUSE and Windows 8.1 on two separate PCIe SSDs

I have an X99 system with an Intel SSD 750 serving as the boot drive. Currently only Windows 8.1 is installed on it. My motherboard has an M.2 slot that I would like to use for a Samsung SM951 for an ...
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0answers
47 views

Dell E6410 UEFI

I'm having problems with my laptop using UEFI. What happens is, I can boot a UEFI operating system only if I go into boot options and manually select it. It will not automatically boot into any UEFI ...
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2answers
61 views

Some basic questions about UEFI

Understanding basics of UEFI seems bit daunting to me!! I have read articles here & there but not getting a clear hang of it. I see a term NVRAM entries being referred. What exactly is this ...
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0answers
34 views

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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1answer
101 views

Revert back from legacy to UEFI boot

I have Lenovo G40-30 which came pre-installed with Windows 8. I changed boot mode from UEFI to legacy mode. Now I can't access the bios by pressing any key F2 or F12. Now the computer starts very ...
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2answers
101 views

how to install windows 7 with size more than 4 GB using gpt usb and UEFI mode?

I know that, in order to install Windows 7 on my windows 8.1 laptop, I must disable secure boot then use the diskpart command to convert my USB disk to GPT and format it as fat32. I made every thing ...
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39 views

Auto power on UEFI tablet (Linx 7)

may not be the correct place to post this. www.linx-tablets.com/linx-7.html I need to get my Linx 7 tablet to auto power on when power is applied (when not in connected standby)?. I've asked the ...
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130 views

Restore .gho image with UEFI

I have created a Ghost .gho image (split among many files) from a Toshiba Satellite with Windows 8, with a version of Ghost which I do not recall (it is either 9.0, 11, or 11.5; I am still trying to ...
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2answers
131 views

Computer does not boot after changing hdd and reverting back

1) I have an existing HDD in my computer that dual boots linux and windows using the traditional bios way. 2) I then took out the existing HDD and swap in a new HDD to install linux on it with uefi. ...