EFI stands for Extensible Firmware Interface, and is an updated version of BIOS. It sits between firmware and the operating system in the software stack.

learn more… | top users | synonyms

3
votes
0answers
72 views

A UEFI entry is corrupt. How do I fix it?

I uninstalled Windows 10 from my triple boot setup to be left with dual boot but the UEFI entry for it stayed after I removed the drive, so to remove it I used easyUEFI to remove the entry but it just ...
2
votes
0answers
158 views

Multi-boot encrypted operating systems on EFI

I'm getting ready to "redo" my desktop computer, encrypting all of my partitions as I install the operating systems. I currently boot with EFI. I'm looking to install both Ubuntu 12.04 (really ...
1
vote
0answers
25 views

Moving Windows 10 bootloader to another drive

Here's the situation. I have 2 SSD hard drives in my system, a 128GB and 500GB. Currently, my partition structure is this: 500GB - Ubuntu 16.04 Install Device Start End Sectors ...
1
vote
0answers
22 views

Windows 10 flashing screen after login

I copied the Windows 10 partition and then in the original used the command "bcdboot e:\windows" to add the second Windows 10 OS. It shows up fine and it even boots, but after I log in I get a black ...
1
vote
0answers
4 views

Recovery partition for identical OS

I have a recovery partition installed and would like the ability to choose which OS to use the recovery for. There are 2 copies of windows 10 installed and one copy is a duplicate of the other. I was ...
1
vote
0answers
29 views

Can't boot into windows 10

I can't boot into windows 10. The partitions on my ssd are: ESP Reserved Partition (I assume for windows 10) Windows 10 Windows 10 Recovery I can't select which Windows 10 OS to boot into. I ...
1
vote
0answers
29 views

MacBook EFI, no sound. Convert to hybrid GBT/MBR?

I only use Windows on my MacBook. So I made a clean installation of Windows without dual-booting OSX. This installation resulted in the Mac is now booting in EFI mode, which led to the sound and ...
1
vote
0answers
75 views

Removing the EFI setup from the boot order

I own a Lenovo notebook (model Z570) on which I have already used a number of Windows and Linux installations pretty well, but now its EFI boot order seems to be broken. After the recent installation ...
1
vote
0answers
80 views

efi usb boot problems with linux mint 17.2

I've created a few usb boot sticks for linux mint 17.2 a few different ways (i.e, from both windows & linux) that all work correctly when trying to boot my laptop. However, when I try to boot ...
1
vote
0answers
134 views

Linux and Windows EFI - Not enough space

I already have Windows installed on my machine, and I'm trying to install an EFI boot manager such as Grub, rEFInd, or gummiboot on Arch Linux. Whenever I try to install any of these three options I ...
1
vote
0answers
172 views

Windows 8.1 EFI Graphical Bootloader: Change OS Thumbnails

I've just used EasyBCD to tweak my Windows 8.1 EFI graphical bootloader, adding entries for Windows XP and Ubuntu. Both of them have a boring thumbnail of a window, while Windows 8 has a thumbnail of ...
1
vote
0answers
2k views

Windows 8 Boot process in EFI

I was trying to add Debian 7 boot entry to Windows boot menu using easyBCD. I accidentally deleted the Window 8 entry from the list now I get a BCD error when trying to boot. Error code 0x000098 How ...
1
vote
0answers
306 views

How can I move an Win 8.1 GPT EFI installation to a smaller disk?

which programs do you use to move a whole HDD (GPT EFI Win8.1 installation with the "boot" and "reserved" partition) to a (~10MB) smaller one? I tried "mini tool partition wizard" and "gparted live" ...
1
vote
0answers
2k views

No EFI boot possible with Clover EFI

So I have this Vaio Duo 11 sitting next to me, and it works very nice. But to have some sort of bootloader which also is compatible with Hackintosh, I wanted to install Clover. I used my MacBook Air ...
1
vote
0answers
881 views

Why does Windows 8 takes longer to boot on EFI enabled system when EFI is not used?

I have a MacBook Pro and I installed Windows 8 on it. Windows 8 took ages to boot up (15 minutes atleast). Because the MacBook Pro is fast, I thought it must be a hardware problem and tried installing ...
1
vote
0answers
228 views

Why wont my computer boot from the logical raid volume while installing Windows 7

I have new computer I built the motherboard is an ASUS Sabertooth 990FX. The motherboard has UEFI instead of normal BIOS. The problem I have is when I try to install Windows 7 with my motherboards ...
1
vote
0answers
166 views

How to know if the BIOS in my Macbook Pro is running in EFI mode or BIOS emulation mode when in Linux

I totally replaced OSX with Linux. In Ubuntu 10.10, how can I tell which mode the BIOS is running in? Is it better to have it running in EFI mode?
1
vote
0answers
2k views

USB mouse/keyboard not working in Windows 7 Setup DVD?

I've just updated my ASUS Sabertooth P67 BIOS from version 1305 to 1850 and I'm trying to reinstall Windows 7 (x64) but when I boot to the DVD, my USB keyboard and mouse don't work. They work fine in ...
0
votes
0answers
19 views

What is a reliable method to create a 64-bit WIN7 pro installer (DVD or USB) that boots on (U)EFI systems?

I am failing to start the Win7 pro installer in (U)EFI mode. I know that there are many instructions out there but can someone please point me to a really working solution. Goal: Burn DVD or write ...
0
votes
0answers
17 views

Windows 7 pro (64bit). Puzzled about (U)EFI install on Lenovo Thinkstation E31

after many years of absence to the MS Win world, I am trying to install a 64-bit Win7 pro in EFI mode onto my Lenovo Thinkstation E31 PC. When I set the firmware to solely work in UEFI mode, I am not ...
0
votes
0answers
20 views

Allow hibernation on efi based hardware using elilo

I have a fresh install of Slackware 14.2 on my laptop which currently boots in EFI mode. I wanna allow hibernation so I added append="resume=/dev/nvme0n1p3" to elilo.conf (this is definitely my swap ...
0
votes
0answers
25 views

How to chain windows bootloaders in a GPT / EFI / VHD boot scenario

I will try to be as clear as possible, but realise I might need to refine the question as it can be confusing. Here is my current setup: HDD is GPT, it has 3 partition. Partition 1 is EFI ...
0
votes
0answers
27 views

Dual Boot on fakeraid

I am having some issues with my MSI notebook: Currently there is Windows 10 installed in UEFI mode and the C: partition is Bitlocker encrypted. The Main disk is a RAID0 which is setup in the BIOS ...
0
votes
0answers
10 views

Add windows to efi

I duplicated the windows 10 partition. I want to be able to choose which windows partition to boot into but the second windows copy wont boot. Is there anyway to add the second windows 10 to efi so i ...
0
votes
0answers
55 views

Install Windows 10 on an EFI / hybrid MBR Macbook?

I have an 2011 macbook which has been updated to EFI 1.7. Bootcamp sets up a hybrid MBR to support Windows 7. I need to install Windows 10 on this hybrid MBR setup instead of an EFI/GPT setup ...
0
votes
0answers
38 views

UEFI Linux Installation To External Flash Drive

Recently I've bought myself a "Mini-PC" box that came with Windows 10. It only supports UEFI boot (no BIOS). Eager to play with Linux Mint on the box, I've installed it in UEFI mode, making sure the ...
0
votes
0answers
25 views

Boot Loaders deleted, How to restore EFI?

I accidentally deleted (Don't really know how) all of the boot entries that appeared on efibootmgr on a laptop that had no operative systems (I did it from an Ubuntu Live USB). Now, when i try to ...
0
votes
0answers
25 views

Booting linux from grub2 gets kernel panic - root=null

I'm doing my own homebrewed version of linux. The distro works fine but I need to update it to use EFI and GPT partitions. My problem now is that I can't for the life of me get grub2 to boot it. I ...
0
votes
0answers
64 views

EFI Shell: Volume is not mapped to filesystem

I got a MSI gaming 3 mainboard, SanDisk SSD 256GiB, Seagate HDD 1TB the mainboard automatically installed the efi shell v2.31 on my hdd /dev/sda1 after installing windows on the ssd and fedora on ...
0
votes
0answers
62 views

Can a 64-bit OS be loaded on a 64-bit processor when the EFI is 32-bit?

I'm struggling to get a Chromebook loaded with a new OS. The Chromebook is a Toshiba CB35-B3330, and it has a 64-bit Intel Celeron N2840. I'm struggling because I can't get any useful information on ...
0
votes
0answers
23 views

EFI Boot Shell Doesn't Work

Currently using an MSI Z97S (not sure if that matters), but when I try to boot into a Windows 10 USB, it skips it, and if I turn on Windows 10 mode, it goes straight to an EFI shell. I did look it up, ...
0
votes
0answers
30 views

partition resize breaks EFI USB installer

I have a 64GB GPT USB stick, containing EFI installer partitions for Windows 7, Windows 10, 5 linuxes, and a Clover BootLoader to launch an El Capitan installer for Hackintosh. It all works ...
0
votes
0answers
29 views

Can't boot Debian after forced EFI installation

I just installed Debian with encrypted /. I made a /boot partition and converted an NTFS partition to EFI. It installed but now I can't boot on Linux. My motherboard boot list put a mirrored "N" sign ...
0
votes
0answers
35 views

Upgrading a USB installed Windows 10 on a Mac

I have Windows 10 installed on external SSD connected to my MacBook Pro 13 trough USB. I'm trying to upgrade Windows 10 and I keep getting an error "Windows can't be installed because this PC has an ...
0
votes
0answers
114 views

Mactel Fedora 23 - Debugging Slow EFI Boot

I recently installed Fedora 23 on my Macbook4,1 (early 2008 model). After the white screen/apple sound at boot, I see a black screen with an underscore cursor for about 10-15 seconds before the Grub ...
0
votes
0answers
45 views

How to get config from a EFISTUB kernel?

I am working on getting normal Linux onto a x86 Android tablet. Only kernel I can find is efilinux.efi located inside the system’s ESP (\EFI\Intel\efilinux.efi). But I can’t get config through these ...
0
votes
0answers
50 views

Move bootmgr from one drive to another (EFI)

My computer currently boots from my HDD, then loads the system located on my SSD. In the following picture, disk 0 is my HDD that contains the boot manager, and disk 1 is the SSD I want to boot from. ...
0
votes
0answers
37 views

How can I delete all Windows Boot Loader entries and rescan?

I have reinstalled windows multiple times (over the last install) and it adds a new entry every time. Can I delete all Windows Boot Loader entries and rescan and just add those?
0
votes
0answers
385 views

Windows 10 UEFI Install on Hp Envy 14 - 1190ea

I'm trying to install Windows 10 and boot through UEFI instead of Legacy BIOS on my HP Envy 14 1190ea. For the installation I have created 3 USB sticks with rufus: The first was configured as "MBR ...
0
votes
0answers
97 views

HFS+ external drive missing EFI, will not mount on Mac

First off: Fear not, I have everything from this drive backed up. I'm just trying to reformat it, but I had someone else attempt it on Windows which doesn't look like it helped. I'm a novice but ...
0
votes
0answers
21 views

System Image Creation Fails in Windows 8.1 Pro

I just finished installing drivers, updates and softwares on a new Windows 8.1 Pro installation. I am trying to create a system image, but the process fails due to a "Volume Shadow Copy size not ...
0
votes
0answers
105 views

Windows 10 EFI partition on different HDD

I've upgraded from windows 8.1 to 10. Once the upgrade completed I wanted to create a system image backup in case anything went wrong down the line. When trying to do this it said my backup size ...
0
votes
0answers
77 views

Move Linux EFI to SSD

I have a Linux Mint 17.1 EFI installed on 500GB HDD. I would like to move it to new 120GB SSD. I resized partitions to fit 120GB SSD and did "ddrescue -v --force /dev/sda /dev/sdb" from LiveUSB but ...
0
votes
0answers
59 views

How do I replace the dump of my USB recovery media with a more simple EFI partition in this situation?

The situation is as follows: this is a new Dell Precision M3800; it comes with a Windows 8.1 pro version and a USB recovery medium; the machine uses UEFI; I immediately scratched Windows and ...
0
votes
0answers
128 views

Windows UEFI repair

I have an Acer Aspire 571-series laptop that came with Windows 8 preinstalled (now upgraded to 8.1). Last week I installed the OS X Yosemite (hackintosh) to triple boot with Windows and Ubuntu, and ...
0
votes
0answers
260 views

Why can't an acer aspire XC-703 turn on without his hard drive?

I received an Acer Aspire XC-703 and i tried to sobstitute the included 500GB hard drive with a 32GB SSD. But the pc won't even turn on (power led off, cpu fan stuck at max rpm, no video output) when ...
0
votes
0answers
2k views

Linux Mint Installation : EFI Partition

I tried to install Linux Mint 17.1 MATE 64-bit edition on my asus laptop, which had installed Windows 8.1. I put CSM (Legacy BIOS) enabled, Secure Boot disabled, and boot with my Live CD USB (created ...
0
votes
0answers
149 views

Can I take out the HDD of an EFI/iCloud password protected Mac and clone it?

I have a situation in which I have Macs with an EFI and iCloud password protections, and I just need to clone the data in them (data far outweighs the device price), and I read somewhere that removing ...
0
votes
0answers
888 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. ...
0
votes
0answers
1k views

winload.efi error code 0xc000000f

I just ran into a really strange problem with my new Surface Pro 3. Everytime I install the [september driver pack from Microsoft the device won't boot anymore (screenshot). The windows 8.1 is a vhd ...