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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Create UEFI-bootable DVD with Windows 8.1 iso

I'm trying to set up a UEFI-boot of Windows 8.1. However, I seem to be unable to install it with a USB drive (previous question), and when I try to install with a DVD (the same iso), I don't get the ...
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Arch Linux UEFI bootable usb installation media

I want to install Arch Linux in UEFI mode, but I fail at booting the installation media in UEFI mode. What I have done so far is: Create msdos partition table on usb key OR create gpt partition ...
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3answers
11k views

How to move an existing installation of Window 7 64bit to UEFI (from legacy)

I have a laptop that has Windows 7 64 bit Enterprise edition. It is already filled with plenty of Software and drivers. The laptop (Dell E6220) supports booting through UEFI, but the insatllition was ...
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Lenovo Windows 8 EFI restore from image

First time here. I have bought e530 with windows 8 and the first hour of work with it i have a problem. I have ssd with windows 7 which i want to use with my new e530. I have made a sysprep of win 7 ...
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193 views

How can I place /boot/efi on a different drive than / and /home?

I am trying to install Fedora 21 onto a relatively recent Toshiba laptop. Due to firmware problems, I cannot alter the existing EFI partition. Therefore, I need to install /boot/efi on external media. ...
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1answer
37 views

How to install Windows 8 without flash drive and dvd? GPT/UEFI

I have my new SSD, on which I want to install Windows 8.1. I have an iso image. So what I normally do when I use MBR on the drive: Create partitions Extract iso to one of the partitions Make that ...
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1answer
2k views

How to edit the Boot Graphics Resource Table / Edit windows 8 BOOT LOGO?

I want to edit the screen which is displayed when windows 8 (starts) loads (/loading). As for now it has the Toshiba logo, I want my custom logo or the windows default logo. I have found that UEFI ...
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2answers
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How to register/convert a restored linux OS (bios) to EFI booting

First let me explain my current set up. I recently scrubbed my two main drives and converted them to GUID. On the primary drive (sdb in my case) I have created an EFI boot partition (ESP) on ...
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54 views

Run Linux dist from bootable USB on Surface Pro 2

I'm having issues booting from USB on my Surface Pro 2 with win 8.1 and UEFI. Tried creating bootable USB using LinuxLive and a Linux dist. Also tried creating bootable USB with Easy2Boot, and adding ...
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Fedora 19 (you have not created a bootloader stage 1 target device)

I want to install fedora 19 to my HDD but I get errors: you have not created a bootloader stage 1 target device sda6 must have one of the following disklabel types: GPT. I tried: Create 1-2 mb ...
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How to find out if UEFI is corrupt? If it is, how to recover it?

I installed Ubuntu 13.04 on my Win 8 Pre-loaded system as dual boot. At this point I could no longer boot Windows 8. I tried using boot-repair, but it did not work. I have basically tried everything I ...
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Thinkpad Edge E545: Failure to load kernel through efi

Now this is an issue I've been battling for a long time ... I am trying to make a proper UEFI dualboot system, the problem is I cannot seem to load gentoo kernel either simply by using EFI stub (also ...
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1answer
34 views

rEFInd boot-manager - 'volume' as GUID?

How can I properly set a volume setting on a boot option in 'refind.conf' by using an GUID of it's partition? My current setting is but 'refind' fails telling me that the specified file was not found ...
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2answers
69 views

replace efi firmware with old legacy bios?

So I bought a new laptop with 64-bit windows 8 pre-installed, and in preparation for downgrading to win7 32-bit, i've been reading about EFI and MBR etc.. It seems like the firmware which boots disks ...
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2answers
2k views

Can't install Windows 7 with UEFI off on GPT drive

I need to have a dual boot with Ubuntu and Windows 7 on my notebook with UEFI. I had to turn UEFI off to install and boot Ubuntu. Now I'm trying to install Windows 7, but it says it can't be ...
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1answer
2k 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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Do I need to re-install windows 8 to enable UEFI?

I know that UEFI provides for much faster boot up speeds, but as of right now it is disabled in my BIOS. Should I enable it and it'll switch over auto-magically?
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How to copy/move files between filesystems using UEFI shell

How can we move files between filesystems using UEFI shell. If i try: fs0:> mv somefile fs1: I get an error that source and destination should be on the same filesystem. How can we workaround ...
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39 views

Windows boot manager overwrites my boot order uefi bios samsung

In the UEFI bios in my samsung ativ boot 5 laptop I have 'UEFI OS' (which is Grub2, Linux etc..), 'Windows Boot Manager'(Windows 8.1). I want to change boot order to: 1. UEFI OS 2. Windows Boot ...
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60 views

Why does UEFI BIOS only identify a 2TB drive on a 25TB virtual drive?

I configure a RAID6 using 16 2TB disks, and finally get a 25TB virtual drive as shown in LSI MegaRAID BIOS. And then I boot via a USB stick and try to install 64bit Ubuntu 14.04 on it. At the ...
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Windows 7 installation disc fails to boot properly on UEFI

Whenever I try to install Windows 7 onto my laptop, the boot process simply stops and hangs at the boot splash. No error is given, and the splash continues to animate. However, it never progresses ...
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4answers
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Hiren's Boot CD with UEFI support?

I am a long term user of Hiren's Boot CD, but the CD does not support booting on UEFI/EFI/SecureBoot hardware, is there some kind of update/patch to apply to the cd image to be able to boot without ...
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1answer
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Move EFI System Partition to another drive

I had a Windows 8 installation on an HDD, using UEFI as boot. The HDD has the following GPT table: DISKPART> list partition Partizione ### Tipo Dim. Offset --------------- ...
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2answers
858 views

Windows 7 boot manager not localized on UEFI system

I'm running an Italian version of Windows 7, which includes a localized boot manager. However, I recently replaced my motherboard with a new one based on UEFI firmware instead of BIOS (Asus Z87 ...
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2answers
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3TB hard disk displayed as 746GB

in BIOS , UEFI Boot is enabled , ACHI Mode is selected , and the 3TB Hard disk (Seagate ST30000DM001) is installed at SATA Port 3. However, in Windows 7 64-bit, 3TB hard disk is displayed as 746GB, ...
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2answers
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RAID 1 accidentially booted in AHCI mode

I have two Samsung 840 EVO SSD's in RAID 1 (Asus P87-Pro and Intel Controller) with Windows 8.1 Pro on it. After a BIOS update, apparently all BIOS settings was reset, which apparently changed the ...
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43 views

I can't access BIOS anymore on my tablet

I have an Onda v116w dual OS tablet. Last week I accidently deleted a Windows boot manager file while trying to reset the boot order. Ever since I’ve been struggling with my UEFI settings to convince ...
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4answers
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Clean install of Windows 7 Pro 64-bit on a UEFI laptop with GPT partition?

I’m currently pulling out hairs about a problem with my wife’s new Samsung Book 9 laptop. it comes preinstalled with Windows 8. She wants Windows 7 Pro. I’ve board a Windows 7 Pro 64-bit for her and ...
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0answers
45 views

Can't enable CSM mode or Fast Boot

I have an ASUS UX302LA laptop and its been working great. A little while back I was loading different OSs on it, and had to disable Fast Boot and Secure Boot Control, and enable CSM mode. After a ...
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1answer
46 views

Laptop reacts to power cord as if it was the power button

I have a Lenovo Thinkpad Carbon X1 which has started to misbehave recently. The basic symptoms are that it Can't be relied upon to start when pressing the power button (not sure if it never does, or ...
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3answers
951 views

Possible to install 64-bit Windows on 32-bit UEFI?

I recently purchased an HP Stream 7, which I was led to believe would have Windows 8.1 64-bit installed. However, it has 32-bit Windows, even though it has a 64-bit processor. Installing 64-bit has ...
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1answer
36 views

Lenevo G580 Model 20157 can't open bios menu

I am facing problem in opening the bios menu by pressing the system rescue botton which bring up the CMOS menu under which there is bios menu where I can change the UEFI/Legecy mode or change the boot ...
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51 views

How to install Windows 7 to UEFI system?

I have a new HP laptop that came with Windows 8. I want to do a dual-boot with Windows 7. I have Home Premium x64. I disabled Secure Boot, and the laptop now will start to boot the Windows DVD but ...
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1answer
59 views

How to boot Windows from new hard drive

I just bought a new, bigger hard drive. Currently I'm running Windows 8.1 with a 1TB hard drive. I just bought a new 3TB hard drive and installed it in my computer. Everything seems OK and Windows ...
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0answers
17 views

How to boot Windows from new hard drive [duplicate]

I just bought a new, bigger hard drive. Currently I'm running Windows 8.1 with a 1TB hard drive. I just bought a new 3TB hard drive and installed it in my computer. Everything seems OK and Windows ...
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0answers
304 views

USB HDD disk not recognized in BIOS Boot order

I installed Ubuntu 14.10 along with Windows 8.1. Obviously I used a USB drive to install Ubuntu. I made all changes to UEFI so I could boot from USB. I could see the USB in the Boot Menu and was able ...
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50 views

Access BIOS on UEFI-based computer

I'm having issues with some hardware, and I called the hardware company's tech support. The support person told me to make a change "in the BIOS, not the UEFI". He seems to think there is a way to ...
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1answer
161 views

Asus X99-Deluxe - Can only boot with the “Clear CMOS” button after cooler installation

It sounds like I have similar symptoms to this question, but this only started happening after swapping out a heatsink for a cooler. To be precise, the system will only boot if I press the clear CMOS ...
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2answers
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What is the difference in “Boot with BIOS” and “Boot with UEFI”

Now Windows 8 supports the UEFI bootloader and I have read that its different from the BIOS, but it's unclear to me after many searches on the Google. Some points in mind are below As we all know, ...
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1answer
38 views

HP laptop - DVD boot difficulties

Yesterday, I bought an HP ProBook 4330s. It had Linux on it. I tried to use a bootable Windows DVD to reinstall the system but it didn't work. I changed the priority in BIOS, the CD/DVD is first on ...
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124 views

Cloning a SSD using GPT not working (Clonezilla)

I am using Windows 8.1 Pro installed on a 128 GB SSD, partition-table is GPT. My Asus Mainboard uses UEFI and i installed windows 8.1 as a uefi installation. Therefore the first boot device is ...
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3answers
4k views

Dual boot Windows 8 and Ubuntu?

I've installed Windows 8 on a machine (Lenovo X220 laptop) with Ubuntu 12.10 already installed on another disk. I am guessing that Windows 8 has convinced the laptop to switch to UEFI boot (rather ...
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0answers
184 views

Windows 8.1 Re-Installation on Acer Aspire - Key Issue

On Acer Aspire V3 model, Windows 8 recovery partition could not complete a fresh installation. It kept stumbling on error; it seems corrupted though I check the disk for erros/bad sectors and did not ...
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3answers
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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 ...
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Getting Dual-boot to work on (non?) UEFI system.

This is the first time I'm working on a Laptop with UEFI so bear with me. I'm gonna bullet-point this to make it quick: HP Envy 6 Windows 7 Preinstalled Default BIOS setting: Legacy Support - ...
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1answer
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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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1answer
77 views

Cannot access BIOS after installing a Linux distro

Some time ago, I went and installed ElementaryOS on my Samsung NP530U3C. After that, I could never access the BIOS again. Pressing F2 had absolutely no effect (neither any other common BIOS-accessing ...
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43 views

Cannot boot onto any OS after deleting Linux partition on UEFI system

Today, I decided to delete Ubuntu 14.10 from my computer. Everything was OK, I had created the USB recovery drive of Windows 8.1. After formating the Linux, I restarted. Sadly, I forgot to delete the ...
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5answers
85k views

How to reinstall GRUB2 EFI?

After successfully updating my bios, something went wrong and I ended up with a blinking cursor on the top left corner of a black screen. No errors, no nothing. The bios now only listed a SATA: ...
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1answer
91 views

How do I convert an EFI System Partition into a normal GPT partition?

I had a Windows 8.1 that required a re-install. In the process, my 4TB secondary disk is now showing up in Disk Management as an EFI System Partition, with no volume. In DISKPART, a volume is shown, ...