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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Do (USB) drives need a master boot record to boot in UEFI mode?

I was reading this tutorial and this (Option Two from there) and as far as I understand, making a Windows USB drive bootable for UEFI requires: rewriting the partition table and formatting as FAT32 ...
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35 views

UEFI shell mode with no colon key

I have a newly built PC with a UEFI-enabled motherboard and I'm having trouble getting my DVD drive to boot into UEFI mode so I opted to boot into UEFI Shell to manually start the DVD in UEFI mode. ...
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1answer
73 views

Avoid UEFI Bios Hell? [closed]

It seems so many people are having problems with UEFI these days, i'd be tempted to find hardware that doesn't come with it. Installing Linux alongside Windows is once again a real mess. Maybe the ...
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250 views

Dell Vostro 5470 - unable to install Windows 8

Has anyone experienced issues with installation of Windows 8 with Dell Vostro 5470? I bought it today, it came preinstalled with Ubuntu 12.04. The issue, as I understand and was able to Google out, ...
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1answer
1k views

Cannot enter BIOS setup on HP ENVY Sleekbook 4, EFI partition broken

I'm running into great trouble with an HP ENVY Sleekbook 4 with an existing Windows 8 installation failing to boot after installing Ubuntu 14.04, and data in the EFI partition is broken (the ...
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0answers
110 views

Caution: invalid backup GPT Header (gdisk)

Each time I boot into my Ubuntu installation, when I open gdisk I am given the messages: GPT fdisk (gdisk) version 0.8.8 Type device filename, or press <Enter> to exit: /dev/sda Caution: ...
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2answers
297 views

Move Windows 8.1 installation to another PC - is it possible to avoid a re-install & just move the hard drive?

Last year I've installed a clean copy of Windows 8 (later upgraded to 8.1) on a new laptop. This process was challenging because the laptop included Windows 8 pre-installed (plus bloatware), and my ...
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516 views

How to generate Asus BIOS rescue password?

I have an ASUS laptop. The problem is that I've forgot my BIOS password. I've clicked Win+r in order to get a date upon which a rescue password would be generated. The date is that of today ...
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1answer
53 views

uefi: linux live cd/usb blackscreens

I have a Medion Akoya P2310 D PC with Windows 8 pre-installed, and I have been trying to install Ubuntu alongside it as well as making a third partition for data storage. After struggling with UEFI ...
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54 views

Extra boot options in BIOS

I've got two extra boot options in my BIOS called ubuntu. There is a picture of them for reference, and they've got a portable hard drive icon in UEFI BIOS. Does anyone know how to get rid of them? ...
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51 views

How to make arch linux use my EFI partition?

I try to install Arch Linux in a Liva mini pc kit -- basically a 64bits intel-based minit computer. That computer has 4 partitions inside an eMMC memory. I've tried to use one of those partitions for ...
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1answer
57 views

How do I boot into UEFI without going through Windows on my laptop?

So I installed Ubuntu on my Windows 8 laptop in a dual-boot configuration for some time, and tonight, I decided I would uninstall Ubuntu. Well, I've managed to lock myself out of Windows and I'm stuck ...
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1answer
159 views

Attempting to install Windows 8.1 as secondary OS, misdetects EFI partition

Currently I have Arch Linux installed as my primary OS, and wish to install Windows 8.1 as a secondary so I may utilize certain special hardware (a capture card which has no Linux drivers at the ...
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0answers
63 views

Asus M5A97 LE R2.0 failure to post with peculiar PCI card

We have a couple of peculiar PCI cards being used in a circ. 2007 proprietary phone/radio communications logging appliance(WindowsXP PC). Both the card connectors and the old motherboard sockets ...
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1answer
50 views

How can I change my BIOS startup screen? How can I backup my BIOS?

I want to know all the safe ways to change the bios startup screen for my lenovo Y500. Instead of lenovo's logo can I have a GIF? Can I have sound with it? Can I time it such that the screen is blank ...
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1answer
56 views

How to make Windows 8 Show Advanced Startup On Boot?

I can't seem to find a way to do this, I already know how to initialize an advanced startup in Windows 8 and I have also gone through this question, but that's not what I want, I want the advanced ...
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1answer
92 views

How is UEFI pronounced? [closed]

UEFI stands for unified extensible firmware interface. Most people know about BIOS (Basic Input/Output System) and to my knowledge pronounce it universal as 'by-ohs'. I've looked around for the ...
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1answer
300 views

How to enable Fastboot again on BIOS?

I have recently replaced the hard drive of my Asus Zenbook UX303LN with an SSD drive and managed to do a clean install of Windows 8 thanks to the link below: If USB is not listed in BIOS as a boot ...
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1answer
59 views

Ubuntu install on disk with Windows 7 UEFI

When I'm trying to install Ubuntu on computer with UEFI and Windows 7, I see no partitions! But when I'm running Ubuntu in live mode file system detect all partitions right (screenshot below). What ...
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0answers
151 views

Dual operating system, cannot boot Windows 8, tried Boot-Repair-Disk and Windows repair, GRUB, EFI

I used to have one hard drive(1TB) with Windows 8(64bit) installed, then i added a new hard drive(256GB) and tried to install Ubuntu in it. After installing Ubuntu to the new hard drive, I can only ...
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1answer
840 views

ASRock UEFI Setup Utility No option to disable secure boot

I want to downgrade my computer from Windows 8.1 to Windows 7. I originally had Windows 7 on my desktop, then upgraded to Windows 8, then Microsoft basically forced me to upgrade to Windows 8.1. I was ...
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1answer
83 views

Can a computer that uses EFI/UEFI rather than BIOS run a real mode OS?

Title says it all: could I get away with installing a real mode OS such as MS-DOS on a EFI-based computer? I understand that EFI-based computers still use "BIOS emulation" for compatibility reasons, ...
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1answer
77 views

How to install Windows in a fresh formatted hard drive?

I was having problem concerned with dual boot of Windows and Ubuntu because I had Ubuntu already installed in my system. Well, there was something wrong with my boot/efi partition's VBR or my hard ...
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28 views

Hardware issue with motherboard BIOS resets

I have a motherboard AsRock 970 Extreme 4. BIOS defaults again and again and it doesn't store settings which I set. I tried to change jumper to Clear CMOS position and after that change it back to ...
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1answer
395 views

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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1answer
46 views

Using multiple OS's on a UEFI secure boot system

I wanted to install Ubuntu on a windows 8.1 system but I don't want to use GRUB or replace my current boot loader. Can I install multiple OS's without showing a prompt to select An OS unless I press a ...
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62 views

Black margins around the image on monitor during system boot up

I have recently purchased a new video card. After i switched to it, my monitor shows black margins around the image near edges of the screen during system boot up. Once OS loads a proper driver for ...
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1answer
704 views

Normal ISO to UEFI bootable ISO converter?

It's easy to Google Windows 8 password recovery tools. However, the PC I'm working on right now doesn't support legacy boot and can only boot from GPT partitioned USB sticks. I'm using Rufus for ...
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0answers
15 views

UEFI boot into last used os

I have windows 8.1 side to lubuntu. There is option in uefi to boot by default to the last used operating system? (I don't want to use grub or windows boot manager)
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1answer
1k views

Why can't I install Windows 8 on an UEFI machine from an MBR based USB disk?

Just tried to install Windows 8.1 on an UEFI machine/GPT disk. I used a 2 TB MBR-based USB drive to contain the installer (FAT32 partition with Windows 8.1 install files). I got as far as selecting a ...
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1answer
114 views

AMD Radeon video card/display only works with UEFI Fedora

When I was using my onboard graphics, Intel HD4600, I was able to set up a dual boot on my SSD with a legacy BIOS Windows 8.1 64-bit installation and legacy BIOS Fedora 20 64-bit installation. I put ...
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0answers
41 views

How can I tell if a Windows 8.1 machine has 'full' UEFI?

I've seen a Windows 8.1 machine that has a MBR format drive and a 'Legacy' BIOS, and it has fancy graphics that look like UEFI. If I have a GPT format drive is it still possible to have the old style ...
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1answer
516 views

How to recover Windows Boot Manager after a Mint installation gone wrong

Yesterday, my cousin wanted me to install Linux Mint onto his Windows 8 Lenovo laptop so he could dual-boot Linux Mint and Windows 8 so he could get some hands-on experience with Windows 8. I've ...
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2answers
33 views

Difference between UEFI and BIOS architecture

How does the UEFI offer an advantage over BIOS architecture? Why is it so difficult install Linux(read Ubuntu) as a dual boot option on a UEFI Windows 8/8.1 PC? I say it's difficult because of this ...
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0answers
682 views

How to add EFI entry by efibootmgr?

I installed stand alone Ubuntu on my laptop by formatting the HDD. Now HDD is not in my EFI menu. From a Live USB environment, I added the EFI entry, even by chroot. However, the EFI menu is reset to ...
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0answers
195 views

Installing Windows 8 on SSHD. Drive not recognized?

I've been trying to install Windows 8 on a new Seagate 1TB SSHD that I got. I managed to make a UEFI bootable USB drive, and installing Windows 8 went fine. But then after the installation it tried to ...
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0answers
150 views

In Windows 8.1 what are the differences between UEFI, and the UEFI style Legacy BIOS?

When using Legacy BIOS (and MBR format disc) the BIOS still looks like UEFI, has a mouse pointer, and appears to function in a similar way. I believe that you can only use Secure Boot with UEFI on a ...
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1answer
147 views

Is UEFI more or less vulnerable than Legacy BIOS?

Is UEFI more secure than BIOS on a Windows 8.1 machine? Is UEFI vulnerable to malware in ways that Legacy BIOS is not? Is it correct that UEFI can connect to the internet before the OS (or ...
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votes
1answer
470 views

Is a hybrid Linux USB-Stick for UEFI & legacy BIOS possible?

my idea is to create an USB-Boot-Stick with Lubuntu that is able to boot on an older BIOS Laptop and an newer UEFI Systems. This would be quite easy, when the Stick would be setup as a legacy boot ...
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0answers
24 views

Third monitor Windows 8.1

My current setup has two monitors running off of crossfired AMD Radeon 7870's, I am looking to add a third monitor for non-intensive usage. I've been led to believe this is possible by changing a ...
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0answers
148 views

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 ...
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1answer
74 views

Reinstalling Windows 8 on a tablet

I got my hands on a Samsung XE700T1A, one of the ones handed out at one of the early Windows 8 BUILD conferences. It's been upgraded from Windows 7 and recovered from an image at some point, so there ...
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3answers
2k views

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 ...
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2answers
624 views

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 ...
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2answers
641 views

How to configure dual boot NixOS with Mac OS X on an (U)EFI MacBook?

I could not find any description of configuring dual boot of NixOS and Mac OS X on an (U)EFI MacBook. I am willing to experiment, but i would like to know at least that what i will try is supposed to ...
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0answers
904 views

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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0answers
58 views

Ubuntu 10.04 Installation Replacing Windows 8 2TB Hard Drive

As a point of reference and documenting for the Greater Good, I thought I'd post something I've discovered. After searching forums for days, I haven't come across this specific tip that might be of ...
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2answers
833 views

Want to buy Asus H81M-PLUS motherboard and i3-4150 CPU; how to make sure it'll work?

I want to buy an ASUS H81M-PLUS mainboard and an Intel i3-4150. The CPU is an Haswell Refresh CPU, but the mainboard needs a newer BIOS version to support the CPU. I expect it won't be shipped with ...
2
votes
1answer
267 views

Monitor only works if Legacy BIOS (CSM) disabled?

I have an Asus Q550-LF computer running Windows 8.1 Enterprise. It has a MiniDisplayPort output which is connected to a MiniDP to DVI adapter. I discovered that my monitor was not working the same day ...
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3answers
355 views

How to boot from 3TB HDD?

I just bought a new HDD of 3TB (not yet shipped). I didn't know that size is normally not supported to use it to boot OS. I learned I need a computer that supports UEFI so that I can install windows ...