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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Convert GPT to UEFI or MBR

I have HDD with Arch linux installed, this disk uses GPT. I would like to convert it to UEFI for using with another laptop (ASUS N56VM), which doesn't support booting from GPT at all (which is ...
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UEFI ASUS system will not bring up grub menu nor boot F19

Just loaded the Fedora Live Games F19 to a hard drive on an ASUS UEFI system. It won't get to GRUB. I forgot to write the error message, but something about it not being bootable. I can follow up ...
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688 views

Gigabyte mainboard: How to enable UEFI graphical bios?

I recently bought a new mainboard (Gigabyte GA-970-DS3). On of the advertised features is Dual UEFI Bios. I have heard of these nice graphical Bios interfaces and thought that I would have one too. ...
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573 views

Windows 8, UEFI, “Supervisor” (BIOS) password, linux?

I've got myself a new lenovo c540 PC and there are Windows 8 OS with UEFI option on and "Supervisor" password on, so it's like a loop, I can't load/install ubuntu from my USB (because BIOS is ...
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LILO and Windows 8

I can't boot Windows 8 from LILO (after recovering it) and I can't find much info since lilo seems to be less used nowadays. When installing Windows I couldn't avoid it from creating actually two ...
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3answers
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Battery won't charge on new Asus laptop (ubuntu)

Hi I bought a brand new Asus Q550L notebook from Bestbuy the other day and I removed Windows 8 from it and replaced it with Ubuntu. Now the battery won't charge. It is sitting at 45% capacity, if I ...
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2answers
253 views

Is uefi required to boot from a GPT sdd?

I've spent the past day trying to get GPT to work with my installation/mobo. I have a GA-990FXA-UD3 rev1.0 motherboard, and I'm trying to install ubuntu over two drives, an SSD and a HDD with the ...
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904 views

How do I install Windows 8 using a GPT Partition scheme?

This question seems to have been asked in very similar form in the past, but I was unable to find a relevant answer her or elsewhere. I am ultimately looking to install a dual boot of x64 Windows 8 ...
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101 views

Can't download Microsoft malware removal tool

It seems that my computer has malware that prevents me from visiting https://www.microsoft.com/ru-ru/security/pc-security/malware-removal.aspx I tried reinstalling Windows 8 and it doesn't help. Is ...
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Dual booting with UEFI secure boot

I have a new laptop that supports UEFI secure boot. My intention is to dual boot windows and ubuntu. Over the past few days I have been researching what the best setup would be and issues I may ...
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249 views

Supermicro MBD-X9DRL-IF-O won't work

It works before, but after I've changed boot to "UEFI only", set boot device to "Built-in UEFI Shell" and enabled "Above 4G" (and maybe done something another), system stuck on code 92 and I can't ...
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2answers
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How to make grub2 chain-boot Win8 after upgrading Fedora18 to Fedora19?

The story I have Lenovo IdeaPad U310 with 24gb SSD, 500gb HDD and UEFI system. I flashed it with EFI from U410 for more info ...
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UEFI - New Laptop, Entry in dbx

I have a three-week old laptop with the following entry in the UEFI dbx database: EFI_CERT_SHA256_GUID Is this a reference to the hashing algorithm used for dbx entries, or an actual entry (and ...
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66 views

What does `sudo efibootmgr --gpt` do?

The manpage says: -g | --gpt Force disk with invalid PMBR to be treated as GPT But does this option make my computer treat all disks with invalid PMBRs as GPT, or only one, and how do I ...
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1answer
356 views

What can TianoCore's DUET be used for in a PC?

I've recently become interested in DUET, Intel's UEFI emulator for developers. I'm reading that it can be installed to a hard disk, but what does this make it? Some kind of boot monitor? A virtual ...
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129 views

Is it possible to flash UEFI(bios) from usb without entering UEFI shell?

The other day I decided to flash my ASUS g75vw laptop's UEFI(aka new bios) with a new version. Something went wrong and after restart I can only see black screen. I can say that the laptop starts, ...
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1answer
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How do I recover my UEFI if it is corrupt?

Okay guys, I did something stupid. But first the back story. 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 ...
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2answers
3k views

UEFI vs non-UEFI options in boot menu

I just built new PC based on Asus Z87-Plus motherboard and in BIOS boot menu I now have my removable devices listed twice - once as a device itself and once with "UEFI: " prefix. It looks like this ...
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2answers
366 views

Chainload EFI Bootloader from grub2 installed on MBR

When trying to chainload a EFI-bootloader from my grub2 I always get an Invalid signature error. According to this question, it happens because my grub2 is installed on an MBR-harddrive. The author of ...
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UEFI: Failed to install override security policy

I run the latest Arch Linux image on ASUS Sabertooth 990FX and get this error. Failed to install override security policy. How can i fix it?
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Boot ISO image from GRUB4DOS on EFI machines

I failed with loading ISO image (non-distro) from GRUB2 from USB stick, but found the way how I can boot the GRUB4DOS and then load the image from there. However, it doesn't work all the time and the ...
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3answers
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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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1answer
223 views

Asus N82J won't boot from DVD

I have a Asus N82J and I want to reinstall Win7. I have a DVD, which boots on other PCs as expected. The UEFI is set to boot from DVD, but it wont find any bootable media. I can not find an option ...
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Unable to try or install ubuntu 12.04 and above 64 bit on my Sony Vaio which includes UEFI and Secure boot

First of all the hardware : Core i5 Ivy bridge 3210M 2.5Ghz 6Gb RAM AMD Radeon HD 7650M 750Gb HDD With Windows 8 Single language 64bit preinstalled. And include UEFI and Secure Boot Specific ...
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Recover Windows EFI Boot Manager after Grub install

I had Windows 8 installed, and tried to install Xubuntu in another HDD on my desktop. After installation, I could only boot into Xubuntu, and never got into the OS selection menu in GRUB. So I ran ...
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3answers
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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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1answer
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How to boot Windows 7 with UEFI, when Ubuntu is installed on Asus Zenbook Prime?

I've tried two days now to get ubuntu AND windows 7 to dual boot... What is the current status? I have completely removed win 8 and installed ubuntu 13.04 to the whole SSD. You may ask, why I have ...
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204 views

grml liveUSB does not appear as UEFI

I'm trying to repair my broken linux install with grml, since I hear it has EFI support, which I need for what I'm trying to do. Specifically, I need to see a 'UEFI:' prefix before my liveUSB drive ...
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Windows 8 deployment from USB

My goal is to deploy Windows 8 via USB to several computers. The systems I'm working with have come with GPT parted HD's. I have set up one the way I'd like it, sysprepped and captured the ...
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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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991 views

Driveimage XML : unable to retrieve drive layout

DriveImage fails to execute "Drive to Drive" operation. Since the 1TB hard disk is dying, I decided to move the System Drive to newly bought HDD. It said, unable to retrieve drive layout. The source ...
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148 views

Can I patch the bugs in my laptop UEFI implementation?

I have an Asus X54H-SX137D laptop, with a K54L mainboard, which supports UEFI booting (AMI Aptio 4.5). I was using BIOS mode, and all functions were working well. In order to reap the benefits of a ...
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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
595 views

Windows 7 fails to boot after cloning it into large drive (3 tb), with motherboard supporting UEFI

Situation: I had ASROCK P67 Pro 3 P2.0 motherboard with 1 tb disc drive with Windows 7 Home Premium x64. I just bought 3 tb disc (Seagate Barracude). I used Seagate disc tool to clone 1 tb into 3 tb ...
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587 views

Installing debian 7 besides windows 8

I bought a VAIO laptop which Windows 8 preinstalled on it in UEFI mode. Now I want to install Debian 7 besides Windows 8 but when I entered to the Partition Setup of debian setup menu, there is a ...
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1answer
2k views

Installing Ubuntu on a GPT partitioned drive

I have changed my system to boot from UEFI instead of BIOS and have installed Windows 7 on my internal SSD which has GPT partition type. I am trying to install Ubuntu 13.04 on my external HDD. My ...
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How would I reinstall the grub-efi bootloader on Fedora Linux?

I recently installed Fedora 18 using EFI boot. Like the other current linux distributions, it sets up GRUB2 for me. I have experience with re-installing the BIOS version of GRUB when things go ...
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1answer
575 views

No display when discrete graphics card inserted

I recently purchased a new desktop PC: HP p7-1423w, i5-3330, HD Graphics 2500 (integrated). The first thing I did was remove Windows 8 and install Linux. A few days later, I was ready to install a ...
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1answer
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Using the UEFI Shell to Restore Boot Configuration

I am using an embedded board that supports UEFI. It is a new fangled board and comes up with American Megatrends BIOS and a UEFI shell (I am more used to dealing with a bootloader and not a PC BIOS on ...
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1answer
1k views

Does the EFI boot partition need to be the first partition?

I'm trying to install kubuntu 13.04 and debian wheezy on my laptop with UEFI on. The installation goes fine but when I reboot it shows "no OS found". Could it be because I already have windows 8 on ...
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4answers
3k views

How to install UEFI BIOS?

I have bought Seagate Barracuda 3tb hard drive. When I start to install windows 8 x64 on that it tells me that Windows cannot be installed on this disk. The selected disk is of the GPT partition ...
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1answer
954 views

Migrating Windows 7 from MBR to EFI without formatting

Based on the experience documented in Migrate from MBR to UEFI with an encrypted system partition I'm considering the opportunity to migrate Windows 7 from the plain ol' MBR to the new GPT/UEFI boot ...
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1answer
771 views

Unable to boot Windows 7 “error while reading boot configuration data” and inability to restore

I have tried to install Windows 8 Pro over Windows 7 Ultimate, but the installation failed to install the new OS and even to restore the old one. I get the following error: File: ...
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2answers
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UEFI Boot a NTFS Drive

I'm trying to install Windows 8 through a bootable USB flash drive, in UEFI Mode. However, while it does work when the drive is formatted as FAT for some versions of Windows 8, the version I want to ...
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3answers
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Every windows 8 boot breaks grub

I have Windows 8 and Ubuntu 13.04 dual booting with UEFI and grub. (re-used the windows UEFI partition) After I used boot-repair, everything seemed fine. After I boot into Windows, however, I can't ...
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Migrate from MBR to UEFI with an encrypted system partition

I had the idea of converting a live and running openSUSE installation from MBR to GPT/UEFI. I followed this tutorial and successfully converted disk keeping partitions and associated data. My original ...
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Booting ArchLinux image under VirtualBox with EFI mode issue

I've spend a bunch of time trying to boot ArchLinux image using VirtualBox (v.4.2.6) with EFI mode enabled under Windows 7. All I get is UEFI shell without any evidence of image successfully booted. ...
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Does CentOS 6.4 Support UEFI and SECURE BOOT Fully?

Does Minimal Edition of CentOS 6.4 support UEFI & SECURE BOOT fully? I want to install it besides Windows 8. Now does it install normally or does it not support UEFI & SECURE BOOT fully yet? ...
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2answers
4k views

What are the disadvantages of not using UEFI boot?

I bought a Samsung series 9 laptop with 64-bit Windows 8 pre-installed and wish to install Linux (probably Ubuntu 13.04 when it comes out ext week, but also considering mint 14). Now there have been ...
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2answers
2k views

Installing Windows 7 on notebook with Windows 8 pre installed?

I have just acquired a Dell Inspiron 7720 with Windows 8 pre installed. I want to remove Windows 8 and install Windows 7 in it. Windows 8 is installed in the C: partition which is in GPT style. There ...