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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Bcdedit's /sysstore: What is the “system partition”? Is it the EFI System Partition or the Windows installation partition?

I never really got a good explanation how. From its example, it is used on the C: drive, which implies it is used on the Windows drive (with the Program Files folder, Windows folder, etc.) But ...
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28 views

Make existing Windows 10 installation bootable from USB

I bought a new laptop (Lenovo Thinkpad) which came with Windows 10 installed. I threw out the hard disk, replaced it with an SSD and installed Linux on it. Now I put the old hard disk into an USB ...
0
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1answer
25 views

Partitionning : is it ok to put my OS at the end of my disk?

I've build a small HTPC; and I have a 2TB HDD in it. The idea is to store only medias on that drive, and to have a separate M.2 SSD drive for the OS. BUT those SSD still are expensive, and i'll wait ...
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0answers
29 views

How to boot Snow Leopard bootable usb with Clover or any other hackintosh bootloader?

So I followed the tutorial in this question answer and created a "bootable" USB from my OS X snow leopard '.dmg' installation media. The problem is that my Clover EFI bootloader doesn't seem to ...
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0answers
10 views

Windows 7 UEFI: Help bcdedit find the “default” store in the EFI partition

bcdedit and similar tools[1] can't find where the store is. It's in the EFI system partition and I have to manually mount and assign a letter, then work on it with /store. Is there a "setting" that ...
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0answers
14 views

Converted Windows 7 to UEFI, now fails to do hybrid sleep

I have two hard drives, 3TB and 2TB. 2TB drive uses MBR, 3TB uses GPT. My Windows 7 OS is installed in the 2TB hard drive. I wanted to try out Elementary OS so I installed it on the 3TB drive in UEFI ...
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0answers
29 views

Graphics card/general hardware support for UEFI/Legacy BIOS?

Graphics card vendor websites have BIOS support information- Legacy/UEFI/both. 1) Why does some graphics card vendor mention BIOS support and some totally ignores it? 2) If I have a old legacy BIOS ...
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1answer
45 views

How to enter UEFI BIOS on Acer Aspire One, when windows 10 has disabled F2?

Web searches show that F2 is the key to enter BIOS on Acer Aspire One and it was working fine when my system had windows 8. When I upgraded to Windows 10 recently, I see that F2 is not working. I ...
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2answers
34 views

Booting with MBR in UEFI (No CSM mode at all)?

I'm asking here since I can't find a clear and definite answer to if it is possible to boot with an MBR partitioned hard drive in an UEFI-only environment. I've read this question but it is still ...
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0answers
9 views

Kali Linux USB Bootable UEFI Failure to find Flash Drive

Thanks for taking the time to view my question, I have been searching for hours (no joke) to have no avail. I got on my computer and decided to make Kali Linux bootable since Virtual Box had tooo much ...
0
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1answer
42 views

What is the best way to Backup and Restore Windows 7 through network? [closed]

The ultimate goal is to take backup and restore Windows 7 Operating System through UEFI/ Remotely. Currently am using "Ghost" to take the image and restore windows 7 in my systems, however it ...
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0answers
10 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 ...
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3answers
69 views

Upgrading to Windows 10 with EFI dual boot

I have Linux Mint and Windows 8 installed on my Lenovo laptop side by side (on different partitions of the same HDD) and booting in UEFI mode. I usually boot Windows from GRUB but I can also get it to ...
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0answers
17 views

Can EFI/UEFI theoretically steal LUKS password?

I usually keep my data private by encrypting the whole hard drive. My previous notebook had BIOS, without UEFI. I have bought macbook, want to install linux in dualboot there. So I wonder if EFI can ...
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1answer
20 views

UEFI boot and data disk

I'm on Windows 10 and I'm ready to convert to UEFI boot, but I want to know, if I need to have all my disks with GPT or only disk from which I will boot. Because my data disk is really full and ...
4
votes
1answer
105 views

Laptop boots extremely slow; black screen

I have a Toshiba Satellite L50-B-2G9, which takes hours to boot. Initially I had windows 8.1 and Ubuntu 15.10 installed side by side and switched between them regularly. I noticed it took longer and ...
0
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1answer
51 views

Do I have to have my OS installed with UEFI to convert my system HDD from MBR to GPT without data loss?

So as of right now I have a PC with a BIOS-only mainboard (Gigabyte 775 - GA-P35-DS3) with which I installed Windows 10 64bit on my 4TB hard drive with MBR. Now I'd like to buy a new mainboard with ...
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0answers
67 views

Getting error: Windows cannot be installed to this disk. The selected disk is of the GPT partition style

I am trying to reinstall Windows 10 on my friends machine from bootable USB. Following is what I have done till now: I created bootable USB using Windows 10 ISO and Rufus with GPT Partition scheme ...
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2answers
43 views

Unable to access boot menu

I've been having a difficult time trying to install Ubuntu on my laptop due to a silly mistake I made earlier. During the setup process, I installed the boot loader to /dev/sda8 instead of /dev/sda ...
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1answer
48 views

Booting from UEFI

I have a Gigabyte board with UEFI, and I can't get an OS up and running. Unfortunately, this product supports booting from neither USB nor CDROM. I've built a SSD with the most recent version of ...
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0answers
49 views

How can I create a bootable usb flashdrive that works with UEFI and BIOS computers for installing Windows 8.1?

I manage a lab with a lot of computers: almost half of them are BIOS-MBR computers and the others are UEFI-GPT. All of them run Windows 8.1. As you know, you can't use for booting a mbr flashdrive ...
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0answers
21 views

UEFI APM RTC Wake Up and standby / hibernation compatability

I configured my Windows 10 PC via UEFI APM to boot every day at 12:00:00 and shut down at 13:00 if not accessed via Teamviewer in the mean time. The PC showed up in teamviewer very irregularly ...
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0answers
47 views

Installing Windows from bootable USB pendrive on UEFI enabled machine

I have 5 year old Dell XPS 15. I have installed Windows several time one it using procedure below: build bootable USB pendrive from Windows ISO using a Windows DVD/USB tool plugging in USB pendrive ...
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3answers
104 views

Unable to install WIndows 7

I am at the point where I have no idea what I can try next after 4 hours of failing. I have tried following options enabled/disabled in ALL possible combinations: Secure Boot ON/OFF UEFI/LEGACY AHCI ...
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0answers
38 views

bitlocker on/off after uefi flash and recovery key has changed?

Amendment: I noticed that though, BL is turned off, that when I try to use recovery options in Windows 10, or when I turn off and back on the TPM in UEFI, that the BL "recovery key" from the original ...
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0answers
52 views

Why can't I boot in UEFI Mode?

I just upgraded my computer from a HDD to an SSD. When I boot my computer with the new SSD, it must be in the legacy boot mode, or it will fail to start. My old drive was UEFI, but now that option ...
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0answers
27 views

What is the key combination for upgrading backup firmware on gigabyte z170-hd3?

Recently switched to gigabyte z170-hd3. some Gigabyte cards have a dual firmware feature, so if the main uefi is flashed incorrectly, it will boot from the backup one. I upgraded the main firmware ...
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0answers
37 views

Windows 10 installation winload.efi error

I previously had installed Windows 10 Pro on my Acer laptop and dual boot it with Arch Linux. After finding out my Win 10 key requires Education edition, I downloaded Education edition and using ...
0
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1answer
48 views

how to Boot to UEFI shell

I am trying to follow some instructions to update some firmware and my instructions are x64 UEFI environment: Boot to UEFI shell Run update.nsh My OS : ...
2
votes
2answers
78 views

Repair Ubuntu boot loader from Windows

My windows 8 is installed on the C drive. I installed ubuntu on the D drive. By mistake I chose the boot loader to load from the C drive while installing ubuntu. Then, restarted and it directly booted ...
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0answers
33 views

How to Disable ASUS UEFI vBIOS Tool?

I just did a complete reinstall of my Windows 7 64-bit Pro operating system and all drivers and other software, after my primary hard drive crashed last week. Now, when my computer boots normally, ...
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0answers
46 views

Starting a custom UEFI application from Windows Boot Manager

Is it possible to make a boot menu entry in Windows Boot Manager BCD to start a custom (signed) UEFI application like, say, GRUB or Intel's UEFI Shell? What are the relevant bcdedit commands? It is ...
1
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0answers
185 views

Installing Windows x64 on 32-bit UEFI (EFI-IA32) via GRUB

I am attempting to install Windows 10 x64 (64-bit) on a device that only has 32-bit UEFI (for the moment) Since x64 Linux can be booted via a custom 32-bit GRUB.. I assume it could also do the same ...
1
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1answer
63 views

Getting UEFI BIOS boot order consistency when attaching/removing USB?

I'm trying to use a USB to determine which OS should be loaded; i.e. when the USB is plugged in, Windows should load, and when it's not plugged in, Ubuntu should load. Booting from respective media ...
8
votes
1answer
25k views

System found unauthorized changes on the firmware

I have a PC with an Asus motherboard running Windows 7 Pro. Yesterday I installed latest Windows updates, restarted, and shortly afterwards hibernated the machine. This morning on un-hibernating I ...
1
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1answer
40 views

Can I re-enable secure boot on a computer after I disabled It

I turned off secure Boot And Then I Booted Into Windows. Can I re-enable it safely?
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1answer
79 views

How can I move an UEFI Win10 install to a BIOS only PC?

We have a ready to use on production environment PC, and want to clone its hard drive on ten workstations. The problem is the machine is a modern PC with a Windows 10 UEFI setup. Is there any ...
1
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0answers
67 views

Triple-boot: OSX, Linux, & Windows with full disk encryption

I have a Macbook Air (MacBookAir6'2) that I want to set up a triple-boot on: Required Operation Systems: OSX (10.11.3) Linux (Debian based: Elementary or Mint) Windows 8.1 Pro The 2 main ...
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0answers
19 views

Asus Vivotab 8 Attaching powered USB hub support for installing linux

I'm trying to install a linux version on my Vivotab 8 (no stylus). The problem is that when I attach a powered USB hub to the micro usb slot to install Linux from USB with keyboard possibilities, the ...
0
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0answers
23 views

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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0answers
22 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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0answers
35 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 ...
0
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1answer
52 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 ...
3
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0answers
113 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: ...
0
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1answer
117 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
82 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 ...
0
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1answer
55 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
45 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
98 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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0answers
49 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 ...