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Questions tagged [uefi]

The Unified Extensible Firmware Interface BIOS (UEFI) is a specification that defines a software interface between an operating system and platform firmware. UEFI replaces the Basic Input/Output System (BIOS) firmware interface originally present in all IBM PC-compatible personal computers

The Unified Extensible Firmware Interface BIOS (UEFI) is a specification that defines a software interface between an operating system and platform firmware. UEFI replaces the Basic Input/Output System (BIOS) firmware interface originally present in all IBM PC-compatible personal computers

1909 questions
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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.
patkim
  • 5,455
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UEFI boot options gone

I ran into some issues booting Windows after trying to make a complete backup of the disc. After searching for information about some of the error codes, I found advise to change some BIOS settings, but instead I thought I would just "restore…
user1797930
  • 71
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What is the difference between Provision Factory Default Keys and Enroll all Factory Default Keys in UEFI?

What is the difference between Provision Factory Default Keys and Enroll all Factory Default Keys in UEFI when enabling secure boot? Almost all motherboard manuals state that: Provision Factory Default Keys - Install factory default Secure Boot…
Eugene K.
  • 373
3
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What can TianoCore's DUET be used for in a PC?

I've recently become interested in DUET, Intel's UEFI emulator for developers. I'm reading that it can be installed to a hard disk, but what does this make it? Some kind of boot monitor? A virtual machine? Would I be able to make BIOS computers run…
Melab
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UEFI Windows 7 Installation won't boot if Ubuntu's MBR drive is connected

I have installed Windows 7 in a UEFI enabled motherboard - however it won't boot when a Ubuntu MBR drive is connected. I've read a little about the incompatibilities between these two, but would like to fix them without doing anything like…
Uri Herrera
  • 133
2
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How to copy/move files between filesystems using UEFI shell

How can we move files between filesystems using UEFI shell. If i try: fs0:> mv somefile fs1: I get an error that source and destination should be on the same filesystem. How can we workaround this?
mjs
  • 121
2
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2 answers

Asus A53E Laptop in UEFI mode resets BIOS three times before booting

Working with an Asus A53E laptop. Enabled UEFI boot mode in the UEFI program and installed Windows 8.1 x64 successfully last night. Now, today, when I start up the machine from cold boot, I can clearly hear the hard drive spin up and then…
fdmillion
  • 1,391
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Backup/dump UEFI firmware

I need to backup or dump my PC's UEFI firmware. How can I do that? even if I can it checksum or signature it would be helpful. UEFI Model: Phoenix for Think-pad
East Activist
  • 31
2
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1 answer

"Checking media [fail]" before booting the OS

My Dell laptop has recently started showing “Checking media” on every boot, before reaching the bootloader. At first I thought it has something to do with the EFI system partition, but that's not the case since it stays after completely rebuilding…
u1686_grawity
  • 452,512
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Linux Lite Problems

So, I've been using Linux Lite for a week now. But, I don't really like them. For that, I plan to install my Windows 7 back in the system. I'm sure you guys knew that, you must change the UEFI mode into Legacy. When I'm trying to install Windows 7,…
Ahmad Syahmi
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Boot problems (UEFI)

I have two drives, one is a HDD, it has windows 7 and an EFI partition the second is an SSD it has some EFI files and the BCD. Whenever I plug the SSD in, the PC always boots from the SSD, in which case it fails. If I select the 'boot from EFI' file…
Recycle Bin
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2 answers

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 NVRAM? Is it the same old CMOS setup data or something…
patkim
  • 5,455
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1 answer

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?
bot47
  • 1,842
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Can I install UEFI Windows 8 through a DVD or must it be a USB?

I've read a few articles that all say to install Windows 8 through USB to achieve UEFI. I have my laptop turned onto UEFI mode but when I switch from legacy to UEFI it doesn't recognize any options to boot from. I in the same Dell bios there is an…
EGHDK
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Do any laptops currently support UEFI Secure-Boot?

Possible Duplicate: How to know if my BIOS supports UEFI? Despite all of the bad press recently regarding UEFI secure-boot, I'm actually interested in getting a system which has this technology. Since the x86/x64 laptop / desktop manufacturers…
BSchlinker
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