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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Backup the UEFI NVRAM entries in Linux

Is there any way to backup the UEFI NVRAM entries in Linux? (seem impossible as per https://bbs.archlinux.org/viewtopic.php?pid=1216104#p1216104, but want to confirm). My EFI menu has duplicate ...
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2answers
173 views

How to manually setup Grub2-efi to triple boot Linux

To install/due-boot Linux on an EFI-capable computer with an pre-existing operating system, like Windows 8, the UEFI - Community Help Wiki at https://help.ubuntu.com/community/UEFI have covered it. ...
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1answer
477 views

How to enable Samsung EVO 840 mSATA SSD Self Encrypting Drive with Intel RST RAID 0

I have an MSI GT60-2OD (Haswell MB, UEFI enabled w/o CSM) with 3 Samsung EVO 840 mSATA SSD drives in RAID 0 mode (Intel RST AHCI RAID Controller Miniport aka Intel(R) Mobile Express Chipset SATA RAID ...
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25 views

Asrock z87 extreme6 overheat protection

I coulnd't find any informations about this function, it's function inside BIOS/UEFI I don't know what temperature is max, does it control cpu, north brigde or what? Manual doesn't tell anything... ...
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2answers
110 views

How does EFI find bootloaders?

This might seem like a rather basic question, but I'm having a lot of trouble tracking down an answer... How does EFI actually find stuff to boot? Under the old BIOS scheme, if the MBR has a special ...
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201 views

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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0answers
123 views

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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283 views

UEFI Boot Manager - Thinkpad Yoga - Boot Menu

I'm trying to set up a dual boot system on my new Thinkpad Yoga and I have a couple of questions related to its UEFI Boot Manager. On power up I can press F12 in order to pop up a Boot Menu in which ...
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2answers
90 views

UEFI: how to force windows to use only 1 partition?

on my old computer that used the good old BIOS, this is how i setup my partitions using gparted on a linux livecd: create partition table format MBR (msdos) create primary NTFS partition created ...
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1answer
151 views

What configurations are different between BIOS and UEFI “AFTER” OS boot?

I tried installing Ubuntu in UEFI mode to VirtualBox. The installation was fine, but after rebooting, OS started correctly while the graphic environment didn't start. This problem itself was reported ...
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1answer
56 views

New Install, Win 8.1 Access over 2 TB

new install, Z87 pro MB, Win 8.1 64 bit, UEFI based. I have 2 TB drives, configured in a RAID 1+0 config, so end result is approx 4TB useable, and windows shows this. The problem is that while I can ...
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2answers
190 views

boot to windows from aptio BIOS

I have installed Ubuntu, but it has overridden my windows boot option, so now it boots to grub. (I can still select windows from there). I want my computer to boot to windows as I only incidentally ...
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1answer
172 views

Imaging UEFI computers

We are buying computers for a new building, but our current imaging software, Symantec Ghost Solution Suite 2.5, does not support imaging of UEFI computers. I’m hesitant to dummy down 300-500 ...
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1answer
114 views

I have no boot options in the firmware's SETUP utility at all and so cannot boot anything.

The "Boot" page of the Aptio SETUP program in my PC's firmware looks like this: I don't have any boot options, so my machine doesn't boot! Here's what I think that it should look like (although ...
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1answer
92 views

EFI partition is 99 MB (instead of 100 MB)

I'm trying to install Linux Mint on an Intel NUC 4th gen. I first installed Windows 8.1 Professional 64 bit, I ended up with 3 partitions created automatically: 300 MB (recovery partition) 99 MB ...
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votes
1answer
630 views

Boot ISO from HDD from UEFI?

I have a Windows 8 To Go Entreprise HDD, which boots both on BIOS and UEFI systems (I'm wondering how that's done, because I need that too). Now, I see the HDD I use for that windows is an MBR HDD, ...
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1answer
108 views

UEFI BOOTLOADER with MBR Drive

I turned on my laptop today and it started saying "BOOT Device not found Error 03F0 Hard Disk", I checked my BIOS Setup and it was in UEFI Mode, I tried to boot from CD/DVD in UEFI mode and got same ...
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62 views

Linux install nightmare, now video seems to be broken even during installation

It's a long story but I can't keep these details to myself because I have no clue what's going on, it's pretty weird. I have two hard drives. One had windows, and the other one had nothing, it was ...
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2answers
89 views

How to remove all the boot data created by Ubuntu or Fedora?

I'm trying to reinstall Linux in one of my two hard drives. The problem is something went wrong previously and it seems to have been persisted into a boot sector or something. So now when I try to ...
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1answer
42 views

Physically moving Windows8 UEFI drive to a non UEFI equipped laptop

Moving a 500GB laptop drive from an unavailable deck used UEFI. Moving it to the non UEFI NO CSM booting deck of same manufacture. Drive works fine, I have to reboot the drive and UEFI infected OS ...
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1answer
29 views

Is there a straightforward procedure for creating a boot menu that can load isos on UEFI usb devices?

I have seen exactly one tool that claims to do this, and the documentation is an ungodly mess. Has anybody succeeded? At this pont Id settle for just a serious documentation on uefi boot device ...
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1answer
51 views

Inhibit grub on multiboot with UEFI and GPT

I'm running a multiboot laptop with GPTs. The OS'es include Windows, Fedora, Debian and Ubuntu. Each distro tries to control booting the computer, but each has its own little quirks. For example, two ...
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3answers
659 views

Dell Inspiron 15z-5523 does not boot from hard drive

I'm looking for help with my Dell Inspiron 15z. I have removed all visible and hidden partitions from all the hard drives in the system (SSD and HDD). I have successfully installed openSUSE Linux 13.1 ...
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254 views

how to disable hard drives in UEFI bios?

sometimes I need to disconnect a hard drive. I have to open my computer and unplug the sata power cable. I am wondering if its possible to disable the hard drive in UEFI bios. I am using asus p8p67 ...
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1answer
77 views

how to make my windows 7 recovery disk bootable?

I am getting this error "bootmgr is missing". did some research on google, the fix is easy, create a windows 7 recovery disk, it should fix that problem. after created the recovery disk, I cannot ...
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2answers
113 views

How one aquires UEFI utilities?

I seem unable to locate any UEFI (EFI) utilities on the web. I am particularly interested in nvrboot.efi as I need to delete duplicate boot manager entry in nvr. Some people mention windows msutil ...
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0answers
107 views

HP 2000-bf69WM doesn't wake from sleep after downgrading to Windows 7

I have an HP 2000-bf69WM laptop that originally shipped with Windows 8. I have since downgraded it to Windows 7 Ultimate x64 SP1. I have installed all the drivers from HP's website for the laptop, ...
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1answer
416 views

Can't install Windows 8 on a UEFI with GPT laptop?

I had Windows 8 (Single language) pre-installed on my new laptop ... and it has lags..i tried to make refresh or reset and it told me that (The driver is locked) So i managed to make a clean install ...
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144 views

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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180 views

Can't find Bootloader without “CSM”

I bought a new Asus N550JV, with Windows 8 (in UEFI-mode) preinstalled. The Laptop had 1 HDD installed. Right after buying, I changed the Blueray-Disk with a new SSD, and installed Windows 8.1 on the ...
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237 views

Cannot boot a Windows UEFI installation with Intel Graphics HD 4000 without CSM

Problem I am attempting to convert my Windows 8.1 Pro installation from BIOS to UEFI. I followed these instructions. However, I cannot boot without the enabling the Compatibility Support Module ...
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78 views

Can you install UEFI? [duplicate]

From what I've read the UEFI replaces the BIOS. BIOSs can be flashed though, so is it possible to install UEFI on a computer using a BIOS? If it's possible, how to do it? I'm guessing this'd be ...
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1answer
170 views

DualBOOT windows 8 and VHDX

I have Windows 8.1 as main OS in UEFI environment and I wanted to have another Windows 8.1 as a VHDX. I used EasyBCD to add entry for the VHDX but, it didn't boot the VHDX and the boot menu was ...
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0answers
82 views

dual boot preinstalled windows 8 laptop with windows 7

I am having a hard disk in gpt partition style and Windows 8 is pre-installed in uefi mode. While trying to dual boot using usb bootable disk(using rufus,gpt partition style,fat32),it displays ...
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1answer
638 views

Asus HD 7750 - The VGA card is not supported by UEFI driver.

I installed windows 8 on my pc with uefi enabled. After installing it when i am turning off the CMS and enabling secure boot, i am getting this message. "The VGA card is not supported by UEFI ...
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4answers
127 views

Windows 7 refuses to boot when HD with old install is inserted

After buying a new case and SSD we decided to reinstall Windows 7, I had a USB stick laying around from when I had to install it on a new UEFI notebook. This USB stick uses EFI to boot. The install ...
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1answer
779 views

Migrate Windows 8.1 from HDD to SSD Error

I’m trying to migrate my Notebook HDD (Asus q550lf-bbi7t07 with Windows 8.1 OEM) to my new SSD drive (SSD Intel 530 Series 240Gb). I tried to clone the original drive to SSD drive with many tools: ...
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1answer
303 views

Windows MBR broken after a Windows update

My Windows 7 machine was working fine last night. When I booted it up it installed an update and then I started using it... It hadnt restarted since the install of the update so I didnt notice that ...
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3answers
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What is a UEFI?

While installing ubuntu 12.04 LTS on my windows 8 PC, many online tutorials were telling to disable the UEFI. My question is what is UEFI and what is it's use?
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311 views

How can I boot to DOS with a UEFI BIOS? (re: updating BIOS)

I have a Supermicro X9SCM-F motherboard and I'd like to upgrade the BIOS because I'm having trouble installing Windows 8.1 (and apparently I'm on a very old BIOS). However, I can't seem to boot to ...
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472 views

Install Windows 8 (clean) on Hybrid Drive

I have a Sony Vaio T series (UEFI) that consists of a Hybrid Drive (SSD + HDD). I would like to install Windows 8 on the SSD and keep the Program files and other applications on the hard disk. What I ...
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68 views

VAIO Bios can't see 2-nd HDD connected to DVD slot

I have a problem. Bios can't see 2nd HDD connected via mSata to Sata connector. If I boot from other device or liveCD, the system can see it correctly. Harware: Sony VAIO SVS13A1Z9R BIOS Inside H20 ...
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34 views

Is Firmware Boot Manager critical? Or can it be deleted if you have Windows Boot Manager

I would like to reset {fwbootmgr} because it not linking to {bootmgr} even though in display order Firmware Boot Manager --------------------- identifier {fwbootmgr} displayorder ...
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413 views

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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1answer
590 views

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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2answers
4k views

Boot into Windows 8.1 safe mode with UEFI BIOS

My brand new Windows 8.1 computer is dead and only shows a cursor on black screen when booting. So I need to boot into safe mode. I thought F8 would do the trick. Apparently my computer is using ...
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142 views

Can't disable UEFI/Safe Boot

I'm trying to install Steam OS on my computer but I can't boot from my flash drive because it's in UEFI boot mode or safe boot. There's no option to disable it anywhere. I've tried doing it through ...
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3answers
266 views

Does there exist a native UEFI disk/partition manager?

UEFI has the infrastructure to support complex applications at boot-time. One of the most urgent needs of the hour is a UEFI application for GPT disk management. A lot of partition management cannot ...
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1answer
4k views

How to fix Boot Configuration Data (BCD) for Windows 8 EFI system

I have Lenovo H530 Desktop which comes with Windows 8. I tried to install Ubuntu on the system and ended up messing something on my way. Current status is my system won't boot into either one of them ...
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2answers
132 views

what is the purpose of UEFI SecureBoot?

I heard that new computers will have a "secureboot" feature built in, and that it's supposed to keep "unsigned code" from booting. I haven't seen any issue with a possibility to boot the wrong OS,as ...