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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210 views

Boot Linux with extlinux from EFI & GPT

Last time that I tried to create Ubuntu/grub2 dual-boot on my new Asus computer, which came preinstalled with Windows 8, I almost stoned it. So, I'm thinking to use extlinux as my bootloader for my ...
14
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1answer
2k views

What hardware device used to eat up 1.4GB of my 4GB RAM, and now suddenly after no hardware changes eats up 2.2GB?

This is more or less a continuation of What hardware device eats up 1.4GB of my 4GB RAM? While I have more or less accepted the solution there that for some mysterious reason, after a BIOS upgrade ...
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2answers
4k views

Windows 8.1 can't detect DirectX 9?

i have really weird problem, just installed for couple times the Direct X 9.0c on my Windows 8.1 Update 1 64bit recently - but the system seems like doesn't assume if DX9 has installed, tried playing ...
0
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2answers
51 views

Enable external boot devices in UEFI

I own an HP Pavilion 5 Notebook which came pre installed with Windows 8. I'm trying to install Ubuntu on my system via a LIVEUSB. But my system doesn't detect the LiveUSB during boot. My boot order ...
0
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2answers
180 views

Why must I install Ubuntu in EFI mode if my other OS is installed in EFI mode?

I'm trying to create a dual-boot system on my new Asus computer, which came preinstalled with Windows 8. I want to install Ubuntu. The documentation says that if my Windows installation is in EFI ...
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0answers
140 views

Restore automatic bootup of Windows 8 in UEFI

My Acer AMD laptop came bundled with Windows 8.0 in UEFI. The state it's in now is that every boot stops at a prompt, and I have to hit ENTER at this screen to continue: How can I make this ...
0
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1answer
2k views

Grub menu not showing for Ubuntu 12.04

This is the first time I installed Ubuntu(v12.04). I have a HP laptop pre installed with Windows 8. I installed it alongside Windows and the installation was successful. But after the customary ...
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1answer
206 views

Ubuntu LiveUSB not booting in HP laptop

I am using a HP Pavilion laptop pre installed with Windows 8. I am trying to install Ubuntu 13.04 on my laptop using a LiveUSB, which I created in the conventional way given on the Ubuntu official ...
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1answer
1k views

creating UEFI USB Boot stick using rufus option gives errors

I am trying to install windows 7 from a USB UEFI stick that I tried to create in vain. I read other posts on creating UEFI USB Boot sticks and found Rufus the most convenient option . However , Rufus ...
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0answers
205 views

Extract Samsung OEM recovery from laptop HDD

I have a Samsung NP540U3C with Windows 8. I recovered it to factory condition, booted and it was fine. There were 107 Windows updates so I downloaded and installed them, rebooted and then I was ...
0
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1answer
307 views

LMDE, Windows 7 Dualboot ond UEFI Laptop

I've bought an Asus laptop where was Windows 8 preinstalled. Then, I've dropped Windows 8 and installed Windows 7 on the whole HD instead. This drive has a 100 MB system-reserved boot partition. ...
1
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1answer
179 views

UEFI with MBR partition table?

i want to convert current GPT partition table to MBR. But my laptop has UEFI, so is it safe UEFI with MBR partition table? or maybe i am misunderstanding about UEFI/GPT things?
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2answers
194 views

How can I get my Thinkpad T420 to boot directly to GRUB, skipping the boot menu?

I installed ArchLinux 2014.03 on my Thinkpad T420 (no dual boot), and when I turn on the computer it takes me to a boot menu with only one option: arch_grub. To continue I have to press enter, which ...
0
votes
1answer
56 views

Chainload none-EFI Linux from EFI Linux

I read somewhere that it might be possible to boot none-EFI Linux from EFI Linux. If so, If my EFI Linux is booted by grub-efi, and my none-EFI Linux is booted by extlinux. How to chainload from ...
0
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1answer
118 views

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 ...
0
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2answers
380 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
948 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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0answers
37 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... ...
0
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2answers
154 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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0answers
211 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
165 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 ...
0
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1answer
676 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
140 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 ...
2
votes
1answer
239 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 ...
0
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1answer
66 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 ...
0
votes
2answers
419 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 ...
4
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1answer
284 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
135 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 ...
0
votes
1answer
119 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 ...
2
votes
1answer
2k 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, ...
0
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1answer
148 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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0answers
76 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 ...
0
votes
2answers
135 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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votes
1answer
52 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 ...
0
votes
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 ...
0
votes
1answer
54 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 ...
0
votes
3answers
978 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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0answers
502 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 ...
0
votes
1answer
110 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 ...
0
votes
2answers
156 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 ...
0
votes
0answers
167 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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votes
1answer
697 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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0answers
207 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 ...
0
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0answers
294 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 ...
0
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0answers
282 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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votes
1answer
86 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 ...
0
votes
1answer
202 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 ...
0
votes
0answers
104 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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votes
1answer
1k 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 ...
0
votes
4answers
193 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 ...