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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grubx64.efi tftpboot option negotiation failed, user aborted the transmission

I set a pxeboot with fedora 23 and now BIOS legacy (CSM mode) is worked with IPv4, but UEFI IPv4/IPv6 is failed. the symptom is IPv6 shows "boot failed" and IPv4 shows "error : couldn't send network ...
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43 views

Problems with asus z97k boot order

I have a z97k motherboard and connected to it a 120Gb SSD (with windows installed) and a 3Tb HDD (with a 500Gb partition with linux mint and the rest is NTFS for storage, also the mint bootloader is ...
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48 views

windows cannot be installed on this disk. The selected disk is of the GPT partition style

My problem is similar to this question: windows cannot be installed on this disk. The selected disk is of the GPT partition style. Windows 8.1 When I changed the bootmode to UEFI only and restarted ...
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1answer
183 views

Frustrating ACPI BIOS ERROR at boot. HP 15-G019WM UEFI laptop

I have a HP 15 with UEFI & AMD processor from a client that just won't boot from any bootable media. "Your Pc ran into a problem and needs to restart Error: ACPI BIOS Error." Prior to the error ...
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0answers
197 views

Installing Windows 10 on a Samsung 850 EVO SSD gets stuck at “Copying Windows files (0%)”

Recently, I acquired a Samsung 850 EVO 120 GB SSD to use for OS (Windows 10) installation. After creating a bootable USB installer (using Rufus) and booting from it, I can do the following things: ...
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1answer
373 views

Clover bootloader is missing bootable hard drives

I have two installs of Clover EFI Clover on my SSD Clover on my USB The SSD Clover - Loads clover properly, no option to boot from hard drive I want to fix this. The USB Clover - Loads clover ...
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2answers
189 views

Why does my uefi firmware ignore the boot order?

My Toshiba Tecra R950 supports UEFI, mostly. It has a good old-fashioned text-based blue firmware settings system that it refers to as "BIOS", rather than the fancy graphical setup most proper UEFI ...
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1answer
141 views

Use install.wim larger than FAT32 filesize limit to boot on UEFI?

UEFI has a limitation that it must boot from FAT32. Obviously, this cannot hold a custom Windows install.wim with updates and software installed. My question is then, without using a PXE server, is ...
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2answers
72 views

Can not enter UEFI Setup on Asus Laptop on Cold Boot. Reboot is Fine

I have Asus X200MA Notebook with Windows 8.1 64 Bit with UEFI mode enabled. On this notebook I find that the only way to enter the UEFI Setup is from within Windows 8.1 Change PC Settings (Restart to ...
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2answers
338 views

How can I create Windows install media that boots & installs UEFI ONLY?

I'm trying to install Windows 8.1 in UEFI mode on my Mac Pro 4,1 flashed to 5,1 with 3.46GHz Intel W3690. As far as I can tell, Windows will only create media that boots the way the box that creates ...
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66 views

Install Windows 10 with UEFI from USB

I'm trying to install Windows 10 on a Lenovo U410 having recently replaced the 32GB mSATA Cache with a larger SSD to be used as a primary system drive. I've created USB install media with Rufus using ...
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2answers
125 views

Use BCDEDIT to configure PXE boot as default boot option

I have a lab full of computers using UEFI that I want to always attempt to PXE boot before all other boot options. However, after automatically imaging a PC with Windows 8.1/Windows 10, the UEFI boot ...
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1answer
184 views

how to use grub to bypass a 32bit uefi to boot windows 10 x64

I have read in another post that it is possible to boot an x64 copy of Windows 10 on a 32bit UEFI using GRUB. the hardware I am using fully supports a x64bit OS. However, the UEFI is locked to 32bit ...
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1answer
42 views

Burned TrentaOS ISO to USB Stick: Not detected in UEFI

Well, I decided to try out the TrentaOS distribution and downloaded their ISO image from sourceforge. First, because I was on Windows, I tried to burn that image to my USB stick with Rufus, but when I ...
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1answer
1k views

ASUS BIOS keeps resetting Boot priority to Windows Boot Manager before UEFI

I have gone into F2 BIOS settings and saved Boot Option #1 [UEFI: SanDisk] Boot Option #2 [Windows Boot Manager] However upon rebooting the system (Win10) goes straight to the hard disk ...
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4answers
658 views

How to completely wipe Windows 10 (I have an Ubuntu boot USB)

Surprisingly I have been unable to find an answer to how to completely remove Windows 10 from a machine. I happen to have an Alienware 15 R2. The target O/S is Ubuntu 15.10 . No, I have no desire ...
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1answer
181 views

PreLoader.efi: What's wrong with my Secure Boot settings?

I installed Arch Linux with Secure Boot enabled using PreLoader. I enrolled the hash for loader.efi, containing rEFInd, and vmlinuz-linux using HashTools. The problem is that I get a message saying: ...
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2answers
2k views

Installing OS via USB “Reboot and select proper boot device”

When I attempt to boot the newly built computer from a USB in order to install windows 10, I get the error "Reboot and select proper boot device." I think that somehow my settings in the UEFI are not ...
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1answer
40 views

Is ubuntu installation process removing my original UEFI partition?

I jut got my new computer with windows 10 installed in an SSD, also I want to install a Ubuntu as dual system on my HDD, I tried installing it several times and put the boot loader for ubuntu in ...
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0answers
46 views

Ubuntu boots through Windows 10 Recovery Mode. How do I add it to the BCD?

I installed Ubuntu on my laptop (UEFI). Here's how I did it. Created my partitions. Plugged in the live USB and went into the Windows Recovery Mode(held shift and clicked on restart). Then I selected ...
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246 views

Uefi - openSuse not booting after booting into windows

I bought a new laptop recently with windows 10, it has uefi. I'm trying to install openSuse leap or tumbleweed. Attempt 1 : Secure boot enabled, installing from dvd. It is installed successfully, ...
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1answer
136 views

Lenovo h30-05 desktop refuses to boot ANY legacy device

I have a new in box Lenovo h30-05 PC that I planned on installing FreePBX distro on. I have had success with the exact same model a few weeks ago, but I am now ready to throw this current machine out ...
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1answer
482 views

BIOS forcing windows 8.1, can't boot from USB to install Linux

I purchased this mini-pc, Kaser YF751A-W. The hardware is closed, and I see no screws, so I can't go unplugging drives, or changing any switches/jumpers. The manufacturer's website kasercorp.com (...
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50 views

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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1answer
342 views

Can't dual-boot Windows 7/Linux Mint (UEFI)

Dear future people: Install Windows 7 in BIOS mode. GPT and UEFI are not properly supported. Longer answer: If you have an EFI partition on another HDD, even if it's your only EFI partition, the UEFI ...
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14 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. I'...
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2answers
237 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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61 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
49 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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441 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
399 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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119 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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0answers
51 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
359 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
110 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
272 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
101 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
401 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
86 views

how to install Windows 8.1 on UEFI boot mode

I have a dell 5559 lap top. It has Ubuntu but I want to install Windows 8.1 on it. UEFI mode does not recognize bootable pen drive. I disable that secure boot mode but same error occurred. How can ...
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1answer
91 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
185 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
211 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
603 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 EULA;...
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2answers
528 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
253 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
1k 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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0answers
34 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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1answer
36 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
67 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
628 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 ...