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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Update Realtek UEFI UNDI Driver

I have a ASUS J1900 motherboard with UEFI BIOS (Realtek UEFI UNDI Driver v2.023). I downloaded archive with RtkUndiDxe.efi v 2.035. How can I update bios?
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25 views

can't enter UEFI Boot Manager on Dell R610

This system seems to have a hybrid BIOS / UEFI setup. Before doing anything, I reset the NVRAM of the machine using the Clear NVRAM jumper on the motherboard.. I can get into the BIOS, and I have ...
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3answers
29 views

Cannot restore Windows Backup Image made in Windows 8.1

I have the following Situation: Laptop is EliteBook 840G1 with 256 GB SSD (Crucial M550). Windows 8.1 with Update has been installed without CSM. I made a Backup using Windows' System Image Backup ...
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1answer
17 views

Fixing hidden recovery partitions that use UEFI

Many name brand Windows 8 computers now use UEFI and have partitions to allow for refresh and reset of Windows. Many of which I have had issues with the reset / refresh / and troubleshooting options ...
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0answers
15 views

bootable USB key cannot boot in legacy mode?

I used the netbootin to generate a Mint 17.1 live USB on a EFI kubuntu system. It can be boot in computer with UEFI mode. However, if I change to legacy mode, the live USB cannot boot at all. Is ...
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1answer
16 views

Can Linux OS Boot off MBR in Native UEFI?

While UEFI & GPT go together, I was wondering if Linux can be instilled and boot off MBR Partition type while in Native UEFI Mode?
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29 views

Reset locked drive password set on a Toshiba Satellite C55D-B5241 by knucklehead nephew

Would someone tell me how to reset the bios via the mother jumper? I didn't know this laptop had uefi bios when I ordered it or that it could be accessed from inside of Windows 8 by a curious child. ...
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1answer
892 views

Does UEFI potentially leak encryption keys?

I just built my first computer in years and for the first time I now have an UEFI mainboard. I installed Windows 7 in legacy mode and encrypted my system partition with Truecrypt. Recently there was ...
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0answers
20 views

UEFI, encryption and system access

I have some questions regarding UEFI. My new mainboard is my first UEFI board whatsoever. I am running Win7 64-bit in legacy mode from an MBR partition, fully encrypted with Truecrypt. Since this ...
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0answers
8 views

Truecrypt system encryption in legacy mode and UEFI

I just recently got my first UEFI board and installed Windows 7 in legacy mode. This new system is encrypted with Truecrypt's system encryption feature but UEFI kind of startles me anyway. First of ...
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2answers
42 views

How to delete OS from boot menu

After installing fedora and Centos and other OS now I have them all showing in my Boot menu [F2] on start up not the menu form the OS even after deleting them and reinstaling other OS - Ubuntu -so It ...
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1answer
56 views

Windows 8.1 will not boot (HP Stream)

When I power on the laptop I'm greeted with a blue screen that reads, among other things: The operating system couldn't be loaded because the HAL is missing or contains errors Thankfully I can ...
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43 views

Debian 8 Installer (partman) doesn't detect Hard Disk Drives on Ultrabook, but all other linux commands (fdisk -l, lsblk…) does detect

I'm installing Debian 8.0.0 and 8.1.0 (both amd64) on a Ultrabook (Dell Inspiron 14z 5423) which has both a SSD and a SATA HDD. During the install, when it asks for partitioning, I choose "manual" ...
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0answers
30 views

My bios is not showing up on bootup

My Windows 7 was crashed so I tried to to boot windows 8 from usb and in bios settings I went to advanced tab and in that I just selected (USB-name)UEFI boot and then my laptop restarted automatically ...
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1answer
29 views

Can't install Linux on HP laptop - install can't see mSata SSD + HDD combo

I have an HP ENVY TouchSmart Ultrabook 4-1119tu that came with Windows 8.1, and I'm trying to add Debian Jessie in a dual-boot configuration. PREPARATION I made space on my hard-drive using a ...
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0answers
29 views

Hard disk does not show any Partitions during windows installation

I have a samusung laptop 365e which ive been using for over a year now, it's been working well but it started freezing all of a sudden during it execution. it then finally refused to boot but instead, ...
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2answers
35 views

Windows 7 refuses to install on gpt styled partitions in CMS boot mode

recently I had asked a question regarding windows 7 setip booting issues on a Toshiba windows 8 laptop. I was however able to boot into it with the boot mode set to CMS. The issue I faces was that, in ...
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1answer
29 views

Booting via network does not work with UEFI mode

I have a laptop I tried booting with PXE to install Windows using WDS. However, the network boot would fail at the TFTP section. If I disabled the network (uefi) option and went legacy network boot, ...
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0answers
67 views

Grub rescue command line, chainloading Windows 7 installer

I currently have grub2 installed on a Baytrail tablet along with Ubuntu 14.10 (64-bit) and Windows 8.1 (32-bit). The tablet comes with 32-bit UEFI only firmware, and a 64-bit atom processor. Using ...
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0answers
21 views

Asus Access BIOS Windows 8 Instructions

For these instructions to access the BIOS from asus, when accessing the advanced startup do I need to be admin?
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1answer
30 views

Do UEFI Mobos have beep codes?

My PC mobo has legacy BIOS however I am curious to know if the UEFI Mobos have beep codes like BIOS. Do they generate beep codes for any crucial failures like missing RAM or graphics etc? Thanks.
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0answers
28 views

UEFI multi-factor authentication on admin password?

Many UEFI vendors offer boot and Admin passwords for a local machine. For a normal cold boot or reset, I would like the UEFI system to simply pick the properly signed bootloader and proceed. Having ...
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1answer
51 views

Dual boot openSUSE and Windows 8.1 on two separate PCIe SSDs

I have an X99 system with an Intel SSD 750 serving as the boot drive. Currently only Windows 8.1 is installed on it. My motherboard has an M.2 slot that I would like to use for a Samsung SM951 for an ...
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0answers
34 views

Dell E6410 UEFI

I'm having problems with my laptop using UEFI. What happens is, I can boot a UEFI operating system only if I go into boot options and manually select it. It will not automatically boot into any UEFI ...
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2answers
54 views

Some basic questions about UEFI

Understanding basics of UEFI seems bit daunting to me!! I have read articles here & there but not getting a clear hang of it. I see a term NVRAM entries being referred. What exactly is this ...
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23 views

Unable to enter UEFI with on boot (With F2/F12)

Symtom is somewhat like this. BIOS is broken (?) I can still enter UEFI Setup using efibootmgr -n on Linux, however press F2 according to what shown on the screen does nothing. Same for F12 (that is ...
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1answer
50 views

Revert back from legacy to UEFI boot

I have Lenovo G40-30 which came pre-installed with Windows 8. I changed boot mode from UEFI to legacy mode. Now I can't access the bios by pressing any key F2 or F12. Now the computer starts very ...
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2answers
80 views

how to install windows 7 with size more than 4 GB using gpt usb and UEFI mode?

I know that, in order to install Windows 7 on my windows 8.1 laptop, I must disable secure boot then use the diskpart command to convert my USB disk to GPT and format it as fat32. I made every thing ...
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0answers
31 views

Auto power on UEFI tablet (Linx 7)

may not be the correct place to post this. www.linx-tablets.com/linx-7.html I need to get my Linx 7 tablet to auto power on when power is applied (when not in connected standby)?. I've asked the ...
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0answers
74 views

Restore .gho image with UEFI

I have created a Ghost .gho image (split among many files) from a Toshiba Satellite with Windows 8, with a version of Ghost which I do not recall (it is either 9.0, 11, or 11.5; I am still trying to ...
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2answers
120 views

Computer does not boot after changing hdd and reverting back

1) I have an existing HDD in my computer that dual boots linux and windows using the traditional bios way. 2) I then took out the existing HDD and swap in a new HDD to install linux on it with uefi. ...
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1answer
132 views

Install Grub2 (with EFI-IA32 support) to the ESP partition from within Windows 8.1 (32-bit) - Bay Trail tablet

This is a very complicated idea, and it's been stuck in my head for a while now, so bear with me. In this question, when I say "Grub2", I am referring to the "EFI-IA32 version". The device I will be ...
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2answers
65 views

How to boot USB stick in BIOS mode?

I have an UEFI-motherboard - ASUS P8Z77-MPRO. It supports CSM(Compatible Support Module). My Win7 is installed in BIOS mode, I've checked it. This because, I must install ArchLinux in the same ...
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0answers
101 views

Booting SD card from UEFI

I've come across the problem. I'm trying to boot a bootable SD Card using UEFI. However, this doesn't work, as there is no "SD Card" boot option AFAIK. I have tried putting all the USB-related ...
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3answers
106 views

Can Windows 8 and 7 be installed on the same UEFI computer?

My system has UEFI, and I want to install both Windows 7 and 8 on a large drive formatted for GPT (I want to also install a few other operating systems, and I need more than 7 partitions). After ...
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0answers
30 views

How to change UEFI bootmanager from EFI Shell?

When booted to the EFI shell, I see I can access the EFI variables, which contain the boot manager settings. But how do I change boot order or add new boot options while inside EFI shell?
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1answer
67 views

Win7 x64 UEFI install error

I bought a Grundig 1452 b1n2 Laptop. It had Win8 x64 (2GB RAM, very slow) I decided to install Win7 x86 via USB (no DVD drive on the laptop). After some struggle with the BIOS I managed to boot into ...
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2answers
106 views

I wanted to install arch linux on a UEFI/GPT system and had questions about the process

My original formal question was "How do I install Arch linux on a GPT/UEFI system" This is meant to be addressed with the documentation provided by the arch linux community, located here: ...
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1answer
26 views

Enter UEFI-Shell using the UEFI-bootmanager?

How do I create a UEFI-Bootmanager entry that jumps into the built in EFI-Shell using efibootmgr? If this is not possible: Is there another way? Does every UEFI come with a shell?
2
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1answer
73 views

System does not boot DVD drive in secure boot/UEFI mode

I had to disable Secure Boot and enable Legacy Support to be able to boot a Windows 8.1 64bit DVD from the CD drive in the BIOS menu to install Windows. Is there any reason why this happens? Is there ...
2
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2answers
317 views

How to change active boot partition of Windows 8.1 UEFI?

I've a 64 bit Windows 8.1 on GPT / UEFI and am trying to boot to another OS without a CD-ROM or external harddisk. I've created a fresh partition (Z:) and copied Puppy Linux.iso over to it. However, ...
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0answers
177 views

Setting up VHD Boot for Windows 8.1 32-bit OS on 64-bit UEFI

I have a Surface Pro 3 that natively runs Windows 8.1 64-bit. By extension, the UEFI on the device has a 64-bit boot loader. I am attempting to setup the device to allow a VHD boot into a Windows 8.1 ...
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1answer
141 views

Cannot boot after migrating my Windows 8.1 installation to a new drive

I want to migrate my Thinkpad X1 Carbon (2015)'s Windows 8.1 installation to a new 240GB PCIe 2.0 4x SSD. I figured that Clonezilla may work for that but cannot boot now. Turned off SecureBoot ...
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1answer
60 views

Using Shim with Debian

How to enable Secure Boot with Shim on Debian? I have been following all sorts of articles online but now I have lost my patience. Anyone know how?
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2answers
749 views

How do I disable digital signature checking for Windows 8.1 EFI files?

I'm trying to patch my bootmgfw.efi file to change the background color of the BitLocker password prompt and other Windows bootup screens. I found the values to search for and replace for the color ...
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42 views

4T RAID 0 Partitioning issue

I am building a new workstation 1.2T 10K SAS X 4 for Win 7 Pro SP1 x64 I must use RAID 0 for this workstation. What I would like to have is C = 500G D = rest of spaces So BOIS based system with ...
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0answers
42 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 ...
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0answers
194 views

Flash 64-Bit UEFI on Intel Baytrail Tablet

Is it possible to flash a 64-bit UEFI on an Intel BayTrail Tablet which currently has a 32-Bit UEFI? I tried to install a 64-Bit Ubuntu 14.04 (which surprisingly worked) but after the installation my ...
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3answers
163 views

Disable Secure Boot to install Windows 8.1 in UEFI mod via USB stick [duplicate]

I'm trying to install windows 8.1 using a USB stick from UEFI Mod. I used Rufus to format the USB stick as "GPT for UEFI". The problem is that my PC can boot in UEFI mode only if I turn Secure Boot ...
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0answers
18 views

How do I create the Microsoft bootloader on the EFI partition? [duplicate]

I have Linux and Windows installed in a dual boot configuration. The Windows bootloader is corrupt. I want to reinstall it using the Windows recovery partition but I do not know how to boot to it ...