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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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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Fedora 19-1, Aptio UEFI and non-CSM Boot

I'm trying to install Fedora 19 on a UEFI computer. The laptop is an ASUS Q500A with Aptio UEFI (firmware or BIOS) version 208, GOP 3.0.14.1015 (Aptio is American Megatrends). I downloaded the latest ...
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How many EFI System Partitions (ESP) can a computer have?

I'm trying to set up dual/multiboot on an UEFI laptop that came with Windows 8 installed. I'd like to operate with Secure Boot enabled. I can install/configure OS'es with SecureBoot disabled (but I ...
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Install Windows 7 on second hard drive after Ubuntu 12.04… with UEFI

What I would like is to have Ubuntu installed on my 60GB SSD and Windows 7 installed on my 1TB HDD in a 100GB partition, leaving the remaining 900GB as a NTFS data partition that I could access from ...
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How to identify UEFI-capable laptops?

I'm on the market for a UEFI-capable laptop for development purposes - looking to play around with UEFI boot and the UEFI shell in general. I'm having a hard time being able to identify machines with ...
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How to distinguish a legacy BIOS from a UEFI/EFI BIOS? [duplicate]

Is there any test that I can run to figure out if my BIOS is a legacy one or a UEFI/EFI BIOS? It looks like it's a legacy one: there's no fancy window but only ugly white words on blue background, ...
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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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Cannot boot Windows 8 into UEFI mode (CSM only)

I have a laptop (pre-installed Win8) that has been through numerous dual-boot configurations. At one point, I had removed everything and ran Linux Mint as the only OS. Eventually, I decided to remove ...
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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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How to reinstall Windows Boot Manager on EFI partition

So I've been trying to install Ubuntu on a second HDD on my desktop, which has W8 installed on a SSD (UEFI-only boot). Thing is, during Ubuntu installation I made the mistake of choosing to install ...
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Can UEFI settings brick new laptops?

See closed question - this is a less localised version of the same question. Summary: changing CMS support in BIOS after attempting dual boot Windows 8 and Ubuntu 12.10 bricked my laptop. While ...
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Boot from CD using UEFI instead of BIOS

I have a Lenovo IdeaPad Y510P. This is my last attempt at recovering my computer, as my recovery partitions are gone and I cannot boot into my computer otherwise. I have Windows 8 x64 OEM installed. I ...
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Dual boot windows8.1 and ubuntu 14.04 launches ubuntu all the time

I have a little problem here where I followed all the steps to install ubuntu on a partitionned disk alongside windows8.1 everything went well except the fact that it always boots ubuntu. It might be ...
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1answer
412 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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Error 0xc000007b when trying to start \EFI\ubuntu\shimx64.efi (Ubuntu) through Windows 8.1 Bootmanager on an UEFI System

Error 0xc000007b when trying to start \EFI\ubuntu\shimx64.efi (Ubuntu) through Windows 8.1 Bootmanager on an UEFI System EFI Entries During Ubuntu Setup, Ubuntu automatically created an EFI start ...
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Can drivers installed on a OS be used by UEFI?

I'm a little perplexed what happened here. I just finished building a PC. Powered it up and went into the UEFI options. During this time the resolution was set for 800x600, and I was getting small ...
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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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340 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 ...
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Dual Boot Windows (any Version) + Linux (any Distribution) with GPT/UEFI, full system encryption and shared partitions

I didn't think that my requiremetns were too special, but my search really didn't yield too many results, so I still got some quesitons unanswered. Basically I'm getting new hardware and will do a ...
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Enabling UEFI mode in BIOS after having set it to CSM mode, and not being able to get back into BIOS

I set my BIOS to CSM only mode after being unable to boot into windows after upgrading it to 8.1 and not being able to boot from a USB stick to repair it. I ended up putting in a formatted SSD, and ...
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Uefi and full disk encryption with lvm on luks

I have an asus machine on which i can use old bios and new uefi. I've always used the old bios system, running a full encrypted debian with the following configuration: an unencrypted boot partition ...
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Dual boot Windows 7 on pre-installed Windows 8 laptop

I have a newer HP laptop with preinstalled Windows 8. I want to dual boot Windows 7 with it, but am unable to boot to the USB. To start with, I downloaded an .iso from Microsoft that I then copied ...
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Unable to load Windows after using EasyBCD to Reset bcd [duplicate]

My windows installation was working perfectly fine until i clicked "Reset BCD" in EasyBCD in Windows 8. After clicking that EasyBCD told me to add Win 8 entry via Add Entry Menu so i did. After ...
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Having problems with booting GRUB for EFI on USB stick

Whatever I do, it constantly drops me into the 'bash prompt'. Never displays a menu, nothing. I'm running GRUB on a USB stick formatted as msdos (so, FAT) and when I boot into it, GRUB simply won't ...
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Is the default Windows 8 UEFI/GPT Partition Scheme necessary?

I'm installing Windows 8 on a UEFI computer with a GPT drive array (RAID 0), and whenever I try to create a new partition the installer creates additional partions according to the default Windows 8 ...
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Could not boot Windows 8 from grub2 nor rEFInd on UEFI-system with Archlinux

I have followed the archlinux beginner's guide thoroughly and was able to install archlinux in UEFI mode and has been able to succesfully boot from it. Everything works fine except that I am unable to ...
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System does not work anymore after migrating to UEFI

I have recently updated my BIOS to UEFI (big mistake...). When I boot in Windows 7 x64 now, it does not recognize any USB driver (even mouse and keyboard).I tried to use Windows Repair Disc to Restore ...
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357 views

Windows 7 EFI Partition Deleted

I converted my Windows 7 GPT disk to dynamic, which resulted in it being unable to boot. So I used EaseUs Partition Master on my second Win 7 installation to convert the disk back to basic. Now, I ...
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How to take screenshot of your UEFI Bios?

I never really needed it, but now that I'm starting to overclock, I'm curious. I've seen people posting their actual screenshots, not pictures from camera, from their UEFI Bios. How can I do that? ...
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614 views

Suspend only works once after full power cycle with Asus P8Z68-V PRO GEN3

This one is strange. I can't seem to get suspend working more than once per power cycle. When I say "power cycle," I mean the only way to get one proper suspend is to cut power from the power supply ...
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Triple Channel/DDR3

Is all DDR3 considered triple channel? The reason I ask is as part of seeing the dev release of Windows 8 and it's utilization of UEFI I started researching motherboards for a potential upgrade near ...
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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 ...
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Do I need UEFI enabled in BIOS for a 4TB external, non-boot disk?

I just want to use a 4TB drive to store data. Do I need to do anything about UEFI in BIOS? When I Google, it always seems to be talking about boot disks larger than 2TB, so I am not sure if this is ...
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is it possible to use wubi on windows 8 by enabling legacy support on BIOS?

I have been struggling to install ubuntu 13.04 on windows 8. because of UEFI, no existing ways (wubi, etc.) does not work and installing grub2 on the boot is a real pain. I see on the BIOS menu that ...
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Reinstall pre-installed Windows 8 [and install Ubuntu with Win 8 later on]

I bought myself a new tiny laptop - Asus X201E. It came with windows 8 preinstalled in UEFI mode, I have no DVDs with it - any DVD with drivers nor Windows 8. Since Im not a big fan of Windows, I ...
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534 views

Disk partitions dissapear after installing Ubuntu

I have a 2TB HDD and first installed Windows 7 in a 1.8TB partition, leaving near 200 GB of unused disk to install Ubuntu in the future. Yesterday I did that, creating 4 partitions: 512 MB ...
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Can I install UEFI Windows 8 through a DVD or must it be a USB?

I've read a few articles that all say to install Windows 8 through USB to achieve UEFI. I have my laptop turned onto UEFI mode but when I switch from legacy to UEFI it doesn't recognize any options to ...
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Will Windows 8 install on MBR?

So will Windows 8 install on a disk which is of partition scheme MBR? Also, can there be anything like MBR and UEFI? (Isn't it GPT + UEFI?) Do the First Generation of Intel Core (i3,i5,i7) support ...
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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 ...
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Installed/Updated Windows 8 UEFI after Ubuntu - Restore GRUB

So, I had a laptop with Windows 8 OEM copy obviously installed in UEFI configuration with GPT partitioning. A little while ago I installed Ubuntu 13.xx(the latest one) alongside it and GRUB ...
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Getting to BIOS on the Lenovo IdeaPad U530 Touch in order to install Arch Linux

I have a Lenovo IdeaPad U530 Touch with Windows 8 preinstalled. I tried to install Elementary OS, but discovered that the WiFi support wasn't there, so I decided to switch to Arch Linux. The problem ...
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Gigabyte UEFI DualBios Lingering Boot Option

I have a Gigabyte Z77X-D3H and a while back installed Ubuntu 12.10 on my system. Today I decided to switch back to Windows and formatted the disk for the new install. While I am not asked which ...
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790 views

install windows 8 in GPT style hard disk

I have an Acer Aspire E15 laptop, of my friend, in which I have been trying to install Windows 8 but I am unable to do so. It has 4 partitions: Partition 1: total: 900MB - free: 900MB - type: Primary ...
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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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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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Fix Windows 8 bootloader after converting MBR disc to GPT

I bought a new MoBo, processor, and some 3TB HDDs last week and am currently setting up a clean installation of Windows 8 on the machine. The MoBo is an Asus RoG Maximus VII Ranger (What?! It was ...
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Ubuntu 14.04 installation on Asrock H77M UEFI, dual boot with windows 8.1 already installed

As the title says, I need to install ubuntu in dual boot with windows 8.1 on my home PC. I knew that with UEFI partition table was written in GPT, but I found that the partition table on my hard ...
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Two Windows 8 installations on separate hard drives - failure to boot

My motherboard supports UEFI and I have 2 disks on it. I did the following steps: a) Installed Windows 8 via USB on hdd1 (Let 's call this WinA). Worked fine, booted fine multiple times. b) ...
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600 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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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 ...