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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430 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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800 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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206 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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337 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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105 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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72 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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166 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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202 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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138 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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321 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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160 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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385 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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438 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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76 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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850 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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573 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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682 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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459 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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14 views

Access UEFI BIOS settings

I have a NEC ultrabook with windows 8 installed, and with UEFI bios. I was told that in order to access the BIOS settings I have to press the F2 key as soon as i power it on, however it doesn't ...
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15 views

How can I tell if a Windows 8.1 machine has 'full' UEFI?

I've seen a Windows 8.1 machine that has a MBR format drive and a 'Legacy' BIOS, and it has fancy graphics that look like UEFI. If I have a GPT format drive is it still possible to have the old style ...
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21 views

How to recover Windows Boot Manager after a Mint installation gone wrong

Yesterday, my cousin wanted me to install Linux Mint onto his Windows 8 Lenovo laptop so he could dual-boot Linux Mint and Windows 8 so he could get some hands-on experience with Windows 8. I've ...
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23 views

How to add EFI entry by efibootmgr?

I installed stand alone Ubuntu on my laptop by formatting the HDD. Now HDD is not in my EFI menu. From a Live USB environment, I added the EFI entry, even by chroot. However, the EFI menu is reset to ...
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29 views

Installing Windows 8 on SSHD. Drive not recognized?

I've been trying to install Windows 8 on a new Seagate 1TB SSHD that I got. I managed to make a UEFI bootable USB drive, and installing Windows 8 went fine. But then after the installation it tried to ...
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11 views

In Windows 8.1 what are the differences between UEFI, and the UEFI style Legacy BIOS?

When using Legacy BIOS (and MBR format disc) the BIOS still looks like UEFI, has a mouse pointer, and appears to function in a similar way. I believe that you can only use Secure Boot with UEFI on a ...
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15 views

Third monitor Windows 8.1

My current setup has two monitors running off of crossfired AMD Radeon 7870's, I am looking to add a third monitor for non-intensive usage. I've been led to believe this is possible by changing a ...
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22 views

How to change from UEFI to legacy without reinstalling Windows?

The machine has UEFI enabled. I can't boot anything except Windows; No bootable USBs. I have to change it to legacy mode, but Windows 8 won't boot in legacy mode. So the only solution I can think of ...
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29 views

Chainload a partition using GRUB2 on a UEFI system

I am trying to install Windows 7 on my laptop which came with Windows 8, but it doesn't have a disk reader and I don't have a USB drive big enough for me to write the Windows 7 ISO to. I wrote the ...
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81 views

New Mainboard Z97-K and OS is only bootable with the usage a LiveCD

I have a new Mainboard, CPU, Ram for his PC - a Asus Z97-K other components like PSU, SSD, HDD are taken from the old Bios based Core2Duo PC The OS is Linux Mint 16 and the LiveCD also - there is no ...
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14 views

Ubuntu 10.04 Installation Replacing Windows 8 2TB Hard Drive

As a point of reference and documenting for the Greater Good, I thought I'd post something I've discovered. After searching forums for days, I haven't come across this specific tip that might be of ...
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151 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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131 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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43 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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62 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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108 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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103 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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208 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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43 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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141 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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0answers
108 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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31 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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70 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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130 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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213 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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250 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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90 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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536 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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74 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 ...