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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Reset BIOS Password for Laptop

I have an Acer Aspire laptop and i recently updated the BIOS through Windows 7. I did this in an attempt to reset the BIOS password as I no longer remember it. The problem is that it no longer ...
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Can't dual-boot Windows 7/Linux Mint (UEFI)

This post is going to be kind of long because I've done a lot of testing. Until proven otherwise, I'm going to assume this incredibly bizarre issue is caused by my computer being haunted. I'm also ...
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Can't install Windows 8 in Sony Vaio SVE15129CNS having default UEFI mode shows OPERATING SYSTEM NOT FOUND

I recently installed Win 10 in my sony vaio e series laptop. but now i want to install again win 8 which gives error like OPERATING SYSTEM NOT FOUND in uefi but in lagacy mode it boot but on selecting ...
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8 views

My PC Boots into a Dutch UEFI Screen Sometimes

Yes, really. Maybe 1 in 4 times when I turn it on, it will boot into its UEFI screen but in Dutch (I think?), with no user input. I can't think of any major hardware changes before this happened. ...
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2answers
26 views

UEFI firmware not recgonising GPT partition table

The UEFI firmware of my ASRock FM2A75 Pro4, fails to recognise the GPT partition tables of my SATA harddisks, as shown by the map EFI shell command: Device mapping table fs0 :Removable HardDisk ...
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31 views

Installing Windows 10 on Lenovo ThinkCentre

I have a Lenovo ThinkCentre that has a Win7 Pro install that's been upgraded to Win 10 Pro. During/shortly afterwards the HDD started failing, so I thought it might be a good idea to do a fresh ...
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1answer
24 views

booting from live USB when running windows 10 on machine

I'm trying to run a Live USB from a Windows 10 system and failing. I've made a Linux Mint live USB, so that I could install it and dualboot. I made it by simply formatting a USB stick to FAT32, ...
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47 views

How to Using Metro Boot Manager on UEFI BIOS when Dual Boot with Linux

I have a problem when trying to set up dual boot (Windows 10 + Linux Mint 17) in UEFI mode or on a GPT disk. I cannot go back to using the default Windows 10 boot manager? In Legacy mode or on MBR ...
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1answer
50 views

Does HP ProBook 4730s have UEFI or BIOS?

Sometimes I read that HP ProBook 4730s has UEFI and other times I hear it only has a BIOS. So which one does it have? As I understand it, UEFI is a replacement for BIOS, not an improvement nor ...
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18 views

Update Intel NUC boot on power setting from Ubuntu Server OS

I have an Intel NUC that is remote and currently booted, running Ubuntu Server. I neglected to set it to boot automatically after power failure when I had physical access. Is there any way to update ...
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29 views

Bootloaders - Booting an MBR only OS using a UEFI only BIOS

A long time ago, in a computer lab far far away, I stumbled upon a bootloader which dared to cross the boundaries between MBR and EFI. It's name was Clover. Using clover, you could boot any number ...
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1answer
36 views

Boot 32bit UEFI from file

I have linux on usb(32bit x86) and two PCs, one an laptop 64x uefi boots fine. one tablet having 64bit processor but 32bit uefi-bios do not boot. The second one has no option for legacy boot, but ...
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1answer
30 views

Disable Windows access to UEFI NVRAM

I have written bash script which adds Grub Entry to UEFI NVRAM. Scripts is invoked by bootable USB linux. This command adds entry: efibootmgr -c -d /dev/sda -p 2 -L "Grub2" -l "\EFI\Boot\shimx64.efi" ...
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1answer
40 views

How do I deploy Windows 7 to UEFI or really boot in legacy mode?

I used to deploy a windows 7 image to computers using clonezilla, after creating two partitions and setting the bootable flag on the system partition. Now however, I've got some computers with an ...
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0answers
25 views

Disk-less Booting with UEFI mode?

I'm fairly new to this. I was able to successfully disk-less boot in Legacy mode. But trying to see whether I can do the same on UEFI mode; since one of my system has issue on Legacy mode. I see ...
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1answer
58 views

How to detect whether a UEFI booted linux machine's video mode is graphics output protocol (GOP) or universal graphics adapter (UGA)?

UEFI firmware appears to support GOP or UGA graphics protocols. GOP is newer and has replaced UGA. On my machine which does not have an integrated graphics adapter (only a discrete graphics adapter ...
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1answer
67 views

Computer won't boot, UEFI beeps

It has been a couple days by now and I am still trying to find out what the problem of my PC is. I have made a short video of what is happening when I run my PC on and in this video you might notice I ...
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1answer
41 views

UEFI and RAID on disks above 2.2TB [AsRock Z97 Extreme6]

I have followed steps from the AsRock Z97 Extreme6 manual how to create RAID on disks above 2.2TB (manual says to use UEFI configuration instead Intel legacy RAID BIOS). In few words what I have ...
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1answer
88 views

Secure Boot State is OFF although it is turned on in UEFI Firmware Settings

Please help me the following problems: While checking system information using msinfo32, I see that Secure Boot State is OFF although I enabled it in UEFI Firmware Settings before. I also accessed ...
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1answer
56 views

Disable secure boot in Linux - no Windows

I just made a potentially costly mistake: nuked and repaved a brand new Lenovo Yoga 500 with Linux... without booting into Windows to disable SecureBoot explicitly. User didn't want to accept the ...
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2answers
76 views

Is it possible to disable UEFI on Skylake motherboards?

Is it possible to disable UEFI on Skylake motherboards? Maybe a better question is: is UEFI motherboard-specific, chip-specific or both?
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1answer
48 views

can't install windows in UEFI mode

I have a dell inspiron 15 7000 series note book. I had win 10 installed in it. Due to some reason i planned to reinstall win 10. So i changed the boot setting from UEFI to legacy and then i deleted ...
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2answers
112 views

UEFI exFAT partition?

Is it possible to boot from UEFI on an exFAT partition? I've been reading that it should be FAT32 and not NTFS, however I was able to boot SteamOS from an exFAT formatted USB - notably with errors... ...
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26 views

Booting Win7, GPT and MBR disks setup

I've got the following setup in the PC: Old disk: formatted with MBR, New disk: formatted with GPT Both have Win 7 installed are are booting fine on their own (in legacy or EFI mode, respectively). ...
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51 views

Windows 10 with UEFI bios - Bootloader damaged

I had Windows 7 Professional (64bit) installed on my old SSD (SSD Corsair Force Series 3). I switch than to another/new SSD (Samsung MZ-75E250B SSD 850 EVO; using the Samsung transfer utility), and ...
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1answer
26 views

How to block certain IP addresses on UEFI system?

So I have several OS on my PC and I'm frequently changing this. Is there some way I can block certain IP address on my NIC so that I can't access it no-matter what. I'm thinking maybe if there could ...
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1answer
33 views

UEFI mode not booting

I just installed windows with a GPT drive and when I go into BIOS and turn on UEFI mode and restart it just keeps booting straight into BIOS settings. Is there a way to fix this or am I doing ...
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2answers
101 views

How to change GPT partition type on windows?

The GPT format introduce far more place to metadata. To set a partition type in diskpart, one use : DISKPART> create partition msr or DISKPART> create partition efi or DISKPART> create ...
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58 views

How to do UEFI+GPT with a iso file greater than 4GB

As I understand the only way I can reformat my laptop which is gpt+uefi by default is if I crate a bootable usb that is also gpt+uefi. However the image file that I have is greater than 4GB and RUFUS ...
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1answer
17 views

UEFI startup randomly gets longer

My startup is randomly getting very long at the UEFI screen (the one with the motherboard logo and the shortcut list : F2 for BIOS, F11 for Boot list ...). For like ~30seconds my keyboard is ...
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34 views

My motherboard almost always boots into the BIOS instead of running the Windows Boot Manager

I recently upgraded my motherboard from a proprietary Dell one to a Rampage IV Black Edition by ASUS. Most of the time when I start my PC, it boots into the BIOS screen, but sometimes it boots into ...
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2answers
44 views

Construct an open hardware laptop without Intel Management Engine (ME)

The Free Software Foundation offers a laptop that is 100% open hardware The Libreboot T400 is a refurbished and updated laptop based on the Lenovo ThinkPad T400... in order to achieve the Free ...
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1answer
92 views

Prevent Windows 10 installer from using the preinstalled serial key without disabling UEFI

My laptop (a Lenovo Flex 2 15) came preinstalled with Windows 8 Standard (with the serial key preinstalled into the BIOS), and I've since installed an SSD (a Samsung Evo 840 120GB) & upgraded to ...
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1answer
42 views

UEFI mixup with previous windows 10 disk on Lenovo

Intro I am asking the same question as I asked on askUbuntu (but did not get feedback). References: http://askubuntu.com/questions/714839/uefi-mixup-with-previous-windows-10-disk-on-lenovo Question ...
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27 views

Can I upgrade my BIOS(LENOVO DPK21A) to UEFI? [duplicate]

I have a Lenovo Ideacentre K330B running Windows 10 Home and I want to change it's BIOS to UEFI. It has a Lenovo motherboard. Here are some specs - BIOS Version/Date: "LENOVO DPK21A, 8/8/2011" Bios ...
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1answer
32 views

How to cleanup EFI boot list

I'm reinstalling my OSes multiple times trying to setup a dual boot and my motherboard boot list starts to get ugly : 2 entries Windows boot only one works, 2 entries for linux and none work. How to ...
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55 views

Cannot boot DVD or USB (Samsung Laptop / Aptio BIOS)

I hope this is the right place to post this. I have a Samsumg laptop where I need to reinstall Win7. It's a Slackware/Win7 dual boot (with LILO) and at some point Windows failed some security ...
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0answers
42 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 ...
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2answers
49 views

Totally remove Windows 8.1 from Toshiba Satellite laptop

I have a legacy app that will not run under Windows 8.1. I want to load Windows XP but need to totally wipe out Windows 8.1. I have tried going into advanced settings in the BIOS and changing UEFI to ...
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121 views

Does unetbootin work in win 10 with UEFI mode?

I would like to install Ubuntu 15.10 using unetbootin and no usb key -thus using unetbootin with Hard Disk (frugal) install mode. However nowhere in the documentation could I see if unetbootin will ...
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1answer
14 views

Cancel Boot Camp automatic boot

I wanted to install Windows using Boot Camp, I gave it the ISO image and partitioned the disk but decided not to pursue after reboot. Now everytime I power up my MacBook Pro it automatically boots to ...
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31 views

Windows 10 boot error

I recently created a bootable USB it using Rufus on a Windows 10 laptop in order to install Windows 10 add alongside Ubuntu for a dual boot on my desktop. I created the USB in Fat32 format. My empty ...
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0answers
34 views

Why isn't my system booting in UEFI mode?

I recently attempted to install Windows 10 as a dual boot alongside Ubuntu 14.04. I used WinUSB to create a bootable drive. I booted into the USB, but when I attempted to select the empty NTFS ...
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1answer
68 views

UEFI firmware corrupt? Neither ethernet nor wireless controller detected anymore

The problem My computer is a 64-bit Acer Apsire V5-572G currently running with Arch Linux. I wanted to use some programs that dont run with Wine. So i set up a Windows-To-Go on an external hdd. Upon ...
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1answer
67 views

How to enable usage of both onboard and dedicated graphics cards?

When I bought my computer a year ago, I somehow managed to change some setting(s) to allow me to use both graphics cards at the same time. Recently the dedicated one flamed out, so I took both my ...
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1answer
39 views

Is it possible to select which system to boot before rebooting, on a multi-boot UEFI system?

I'm wondering if there's a way to have a computer with UEFI and two different OSes installed (Windows 10 and Linux Mint 17.x in my case) where you don't have to wait for the system to shut down in ...
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0answers
20 views

Zotac Nano uses lots of power while on standby and accesses USB stick - why?

I have a Zotac Nano mini PC with a UEFI firmware here. I have noticed that when on "standby" it consumes a few Watt of power. To illustrate: We start with the power supply disconnected (the power ...
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0answers
21 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 ...
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0answers
55 views

Why does the FreeBSD kernal crash on UEFI boot?

I recently downloaded the FreeBSD 10.2 distribution from the official website; I used the 'FreeBSD-10.2-RELEASE-amd64-uefi-memstick.img.xz' file. I used MS ImageWriter to image a USB and proceeded to ...
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2answers
52 views

Not seeing Boot order change Option

I'm trying to install Ubuntu in my Dell Inspiron 5548 laptop and its giving me real stomachaches! Windows 10 is in UEFI mode. So I have to install Ubuntu also in UEFI mode. As such, I disabled ...