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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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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1k views

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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414 views

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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773 views

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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205 views

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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332 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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77 views

Unable to access UEFI settings on Lenovo

I have a Lenovo G580 on which I installed Windows 8 and several Linux distros which have messed with my booting. The last I used was boot-repair tool. I have an EFI partition on sda2. The Grub load ...
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60 views

Trying windows 7 dual boot on a windows 8 machine

I have a ThinkPad (T530) with Windows 8.1 with one HDD and this is what I have done to achieve dual boot with Windows 7 on this machine - On my main and only hard disk I created a new volume ...
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2k views

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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121 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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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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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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255 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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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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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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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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69 views

How do I find the storage capacity of the E²PROM chip on my motherboard? How much space is needed for UEFI to be implemented?

I'm looking at a solution for upgrading BIOS to UEFI on a motherboard that doesn't natively support UEFI. Another user, Rod Smith, replied to a question as to how this would be done stating: "It's ...
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786 views

Tails “clone” LiveUSB wont boot

I'll try to be as clear as possible. I did install Tails to a USB, then I cloned it over another USB and thats where the problems started. The "clone tails usb" won't start in my laptop. I did try ...
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511 views

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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6k views

Install Windows 7 64bit from USB drive in UEFI mode

I got a Lenovo Ideapad Y580 with Windows 8 and I want to install Windows 7 on it. I followed the instructions on this link to create a UEFI Windows 7 Install USB flash drive - but it does not work. I ...
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653 views

Using UEFI to access CPU features which are locked in BIOS

I have Dell Latitude E6420 with SandyBridge i5-2520M and standard issue Dell BIOS (version A15). In certain situations computer produces annoying high-pitched noise (it is not loud but it is ...
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455 views

Windows 8 and Windows 7 UEFI

I have Windows 7 x64 SP1 installed on my Asus P8Z68-V LX board through UEFI (on a GPT HDD). I wanna install Windows 8 on the partition I made for it. But I don't have a DVD or USB drive so I ...
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2 views

Installing Ubuntu 12.04 x64 in MBR

I wanted to install Ubuntu 12.04 side by side with Windows 8.1 in my SSD. Windows is already installed in MBR, even though I have a UEFI machine. And so I used the legacy Bios. I have confirmed that ...
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79 views

This should be simple: “winload.efi missing or corrupt” yet neither. Win8.1 not booting

I have a desktop PC that was running Windows 8.0 from a slow HDD. I unplugged the old drive and installed a new SSD and Windows 8.1. Once I got it running, I unplugged the SSD and plugged the HDD ...
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73 views

'UEFI boot source (windows 8)' and 'Legacy source (RHEL 6)', dual boot issue, after installation

On new system where windows 8.1 installed already, I have shrieked the partition and tried to install RHEL 6. But the DVD is not detectable (may be because it is not supporting UEFI boot source). ...
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30 views

Is it possible to bypass the 5-second delay in EFI shell?

Due to my unusual hardware configuration, i am forced to set two PCI registers using the mm EFI command before being able to boot Windows. Right now i have a build of the EFI shell (my mobo does not ...
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47 views

Booting a GPT USB key on older BIOS laptop

I have an old HP EliteBook 8530p, which does not support booting from GPT USB (GPT HDDs are fine though). Lately I had the wish to have a fast-to-start OS for browsing, smaller web tasks, etc., so I ...
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83 views

Restoring Windows 8.1's UEFI files

During a failed attempt to install Arch Linux, I accidentally wiped my UEFI partition clean. Now I cannot boot into my Windows 8.1 installation. (I'm pretty sure its partition is intact). I've ...
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96 views

How to change 'timeout' of the UEFI boot manager from Windows 8?

How can I change the 'timeout' setting of the EFI boot manager from within Windows 8? I am trying to dual-boot Windows 8 and Ubuntu and I would like to be able to choose one or the other OS at boot ...
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149 views

Are there any rescue CD's which are bootable on UEFI and or UEFI with Secure Boot enabled?

I'm looking for Rescue CD's like Hiren's Boot CD which allow me to boot without switching to BIOS or turning off Secure Boot. I had no luck finding such thing. Is it even possible to launch such an ...
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29 views

Boot Linux with ELILO 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 ELILO as my bootloader for my new ...
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119 views

Recover windows 8 UEFI Boot

I have a Asus x202e notebook and I accidentally deleted the whole partition table while trying to install Ubuntu. I have recovered the partition table using testdisk tool. Now I see OS, Data, Restore ...
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90 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 ...
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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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63 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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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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181 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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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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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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0answers
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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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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146 views

Arch Linux - Partitions and Mount on Clean Windows 8 Dual Boot

I'm trying to install a Arch Linux dual boot config with a copy of Windows 8 I clean installed and added programs to. I've already shrunk the partition and changed the system time to UTC, but I'm ...
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163 views

How to install arch with EFI and change system to ubuntu

This question is weird. The only Linux distribution working on my MSI GE60 with windows 8 and Uefi is Arch. I cannot install other distributions because I get a black screen on install. My problem is ...
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289 views

Moving a system partition to new Hardware with Win8/UEFI, without screwing up BCD

My existing Win 8 install is historically installed on a MBR dynamic disk (that's so I can soft mirror the data partition which is on the same disk). I just bought a new motherboard/new HDD, and I ...
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216 views

Win 8: Adding a boot volume to an MBR dynamic disk [NOT about changing to basic disks]

(This is NOT aiming to convert to basic disk. In this question, the disk stays dynamic but becomes bootable) There doesn't seem to be a clear, well stated answer I can find, for the question "What ...
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65 views

Installing Ubuntu inside Windows7

I have recently bought an HP Pavilion g6 laptop that comes with windows 8 running on it, but I formatted and installed windows 7 instead. Now that I want to install Ubuntu 12.04 inside windows 7 (like ...
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0answers
30 views

uefi legacy mode: timeout disappear

I have a multiboot Windows 2008 - Windows 8, which is working perfectly on legacy mode of UEFI, I would like to set a timeout on it. I did it with bcdedit but it is not working. It is only if I ...
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66 views

ASUS laptop refuses to boot to USB?

All of a sudden today, I can no longer boot from USB. I've tried installing a Crunchbang Linux ISO to a USB drive using a method (LiLi USB) that's worked for me dozens of times in the past. Now, for ...