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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What is the difference in “Boot with BIOS” and “Boot with UEFI”

Now Windows 8 supports the UEFI bootloader and I have read that its different from the BIOS, but it's unclear to me after many searches on the Google. Some points in mind are below As we all know, ...
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1answer
2k views

Can I enable Secure Boot on a computer where Windows 8 was not preinstalled?

Despite all the hate surrounding Secure Boot, I frankly think it's a good idea, if it can be turned off by the user (which it can be on non-ARM systems). My laptop didn't have Windows 8 installed, but ...
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3answers
14k views

Is it possible to update BIOS to UEFI?

I just ran the Windows 8 Upgrade Assistant on an older machine (just for fun) and was informed that due to lack of UEFI firmware, Secure Boot would not be supported. Is it possible for motherboard ...
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4answers
7k views

Can a Windows 8 machine safely run without an anti-virus? [closed]

One of the new features of Windows 8 is the UEFI "Secure Boot", "which uses a public-key infrastructure to verify the integrity of the operating system and prevent unauthorized programs such as ...
2
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0answers
370 views

Windows 7 EFI Partition Deleted

I converted my Windows 7 GPT disk to dynamic, which resulted in it being unable to boot. So I used EaseUs Partition Master on my second Win 7 installation to convert the disk back to basic. Now, I ...
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1answer
114 views

OS (Fedora) not booting after disconnect/reconnect hard drive

I have two hard drive install on a system, one with Fedora installed, and one with Windows. They are NOT dual booting and they do not power on at the same time. I disconnected from the Fedora hard ...
6
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2answers
732 views

On warm (re)start, computer powers off instantly. After unplugged, it starts and runs ok

My computer fails to start from any power-state other than power-off: ASUS UEFI MB (F1A75-V Pro) with AMD Llano APU 12G RAM (passes memtest) 3x HDD Thermaltake semi-passive PSU Cold start works ...
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2answers
1k views

windows 7 64 bits UEFI add old hard disk MBR

I have a new machine installed with win 7 64 bits with UEFI but when I want to add an old hard drive (MBR) the system wont boot. Is there any solution to this problem without having to format the ...
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1answer
8k views

ASUS laptop doesn't charge/use the battery after reinstalling Windows 7

I've done a clean install of Windows 7 x64 on an ASUS X501A laptop. The battery is detected and shows in the system tray as "plugged in, charging". However the charge level stays at 76% and if the AC ...
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1answer
466 views

Slow Bios Check After plugging USB Device

i am having a problem with booting my PC...After plugging my wireless network adapter in a usb port(does not matter which), it takes 30 secs to pass the bios check and start windows loading. If I ...
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3answers
5k views

Upgrading to UEFI / GPT / Windows 8

I've recently upgraded from Windows 7 / VMware to Windows8 / Hyper-V with my Dell M6600 and I'm really please with the result. I admit though I like to run the latest stuff so I was wondering is ...
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2answers
13k views

Windows 8 + Linux Dual Boot under UEFI BIOS

My intent in a very near future is to set up a dual boot system with Windows 8 and Debian Linux (for testing purposes) on a Lenovo Ideapad 205, that has UEFI BIOS. I saw several articles about the ...
5
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2answers
940 views

Windows 8 Install Hanging at first white-font boot splash

I'm trying to install the Windows 8 preview on my Samsung Series 9 (2012, Ivy Bridge). I've done a bit of a custom scheme with this one: I'm using EFI/UEFI on this system. I've seen no indication ...
5
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1answer
372 views

Triple booting on a Mac Book [almost there]; boot loader issues

Here is my current GPT/MBR partition table: Current GPT partition table: # Start LBA End LBA Type 1 40 409639 EFI System (FAT) 2 409640 663646255 Mac OS X ...
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1answer
3k views

Unhide a EFI System partition

I don't know how I come to this but the partition I use to install Windows 7 64-bit is hidden. It is also a EFI System partition (I saw this using the Disk Management tool). Since the Windows ...
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3answers
61k views

How to tell if windows 7 installer boot in EFI or BIOS?

I have a windows 7 64bit installation USB. I want to know if the windows 7 installer has booted into EFI or BIOS mode. I googled and found a solution here ...
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1answer
6k views

Adding Windows 7 boot entry in an EFI bootloader

Long story short, I use EasyBCD and accidentally delete the Windows 7 boot entry from the boot manager. My laptop is Asus N46VZ and it uses EFI. I want to restore the bootloader by adding the windows ...
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2answers
6k views

Windows (using UEFI boot on GPT disk) will no longer boot after adding an MBR hard disk

I have recently installed Windows 7 64 bit on a new SSD using UEFI boot and GPT. The system worked fine. After adding my old system HD to the system (that uses MBR), Windows will no longer boot ...
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10answers
365k views

How can I repair the Windows 8 EFI Bootloader?

I installed Windows 7 and Windows 8 in EFI mode on a hard disk some days ago. Today, the bootloader got missing/corrupted. I currently have the Windows 8 installer on a flash drive and tried using ...
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0answers
32 views

Installing Windows7 with Fedora17 on UEFI system [duplicate]

Possible Duplicate: How to install Windows 7 x64 on GPT? I made a Windows 7 installation on 750 GB disk so that Windows 7 used 50 GB where it created 100 MB NTFS system partition and 48.7 ...
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1answer
1k views

How can I install a legacy bootloader on a Windows EFI system?

Background Information / My Reasons: I want to use the chameleon bootloader to boot a windows 7 installation, windows was installed in EFI mode on a GPT partitioned disk. When chameleon loads I see ...
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2answers
4k views

Install Ubuntu 12.04 in UEFI mode on a HP Pavilion dv6-6c40ca

I have recently (as of July 2012) bought a HP Pavilion dv6-6c40ca laptop. It came pre-installed with Windows 7 on an MBR. I installed Ubuntu 12.04 on it on a GPT partition in what I think is BIOS ...
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1answer
2k views

How to take screenshot of your UEFI Bios?

I never really needed it, but now that I'm starting to overclock, I'm curious. I've seen people posting their actual screenshots, not pictures from camera, from their UEFI Bios. How can I do that? ...
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3answers
6k views

How to boot Windows DVD without UEFI

I searched the web, but didn't find anything. I formated my single partition (300GB) to mbr partition table (it used gpt before). Now I want to install windows 7 but I can't because: Windows cannot ...
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1answer
2k views

Uefi Grub booting to Windows XP hangs at black screen

I had a working system that booted xp and linux just fine from grub2. I changed systemboards to one that has uefi and now xp hangs unless i use f11 and boot directly to the drive with xp in the mbr ...
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3answers
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Is there any way to boot to DOS in a system who's BIOS option is set to UEFI?

I have a system that has an option in the BIOS to choose boot type as "BIOS" or "UEFI". When I choose "BIOS" I can boot to DOS without problems. When I choose "UEFI" I can boot to an EFI startup.nsh ...
0
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1answer
379 views

Why is Windows 7 spliting my RAID volume into 2 parts?

I recently built a new computer using an ASUS motherboard that uses an AMD processor. The board uses a UEFI firmware instead of BIOS. So wanted to use my RAID 0 volume which is 3TB as my primary ...
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2answers
8k views

Will Windows 8 install on MBR?

So will Windows 8 install on a disk which is of partition scheme MBR? Also, can there be anything like MBR and UEFI? (Isn't it GPT + UEFI?) Do the First Generation of Intel Core (i3,i5,i7) support ...
5
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2answers
3k views

Dual Boot Installing Ubuntu 12.04 with Windows 7 (64) on a non UEFI system fails

I cannot seem to install the correct boot loader for a non-UEFI firmware system. I'm trying to install Ubuntu 12.04 and Windows 7 (64) which are technically compatible with GPT but for windows only if ...
0
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1answer
2k views

Ubuntu 12.04 doesn't detect hard disk partitions

I just installed Ubuntu 12.04 32-bit on an ASUS Laptop and wanted to install it in another one, the ASUS A55V. After booting the laptop and setting up Windows 7 (I unfortunately cannot wipe out ...
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2answers
6k views

Gigabyte GA-Z77X-D3H MB problems

I installed a new system last week. I've some issues with it. The system consists of a: Gigabyte GA-Z77X-D3H with F9 BIOS (latest) Intel Core i5 3570K proccesor Sapphire Radeon HD7850 2x 8GB ...
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0answers
105 views

Do any laptops currently support UEFI Secure-Boot? [duplicate]

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 ...
0
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0answers
2k views

How does the EFI partition work and can I boot an x86 OS with a bootx64.efi file?

I have a Thinkpad X230 laptop and I want to install Linux Mint Debian Edition along side Windows 7 on my GPT formatted SSD with the BIOS in UEFI mode. The problem is that I don't understand how EFI ...
0
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2answers
208 views

Am I right thinking that UEFI and GPT eliminate all the sector size related problems?

Am I right thinking that UEFI and GPT completely deprecate all the CHS/MBR legacy and eliminate all the sector size related problems (alignment, max drive size, etc.) as well as partitioning ...
0
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0answers
2k views

UEFI BIOS - which “Specification Version” is implementied in my system?

The current discussion about Windows 8 and the new SecureBoot feature of UEFI shows that there are big differences between the different UEFI Specification versions. Therefore, it would be good to ...
2
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1answer
5k views

How to access the GUI of UEFI on ASUS Laptops?

My ASUS Laptop has UEFI and GPT Paritions running on Windows 7 x64. I've heard a lot about these GUIs. How do I access them? As using the F2 button simply brings up the plain old BIOS UI.
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0answers
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ASUS Recovery DVDs does not “INSTALL” windows

My ASUS R500VM has UEFI and GPT scheme disk. Earlier, I tried to resize the default partitions using EaseUS but it failed and couldn't boot anymore. It showed the message that I have to insert the ...
0
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2answers
192 views

Windows won't boot after moving house. How do I solve this?

Ive just moved house and tried to set up my desktop after packing it away and now when I power it on, the BIOS boots up and no errors are found but when my computer tires to boot into Windows 7 a ...
0
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0answers
2k views

Why does DDR3 1866 RAM crash UEFI BIOS & DDR3 1333 Does not?

I have an ASUS Sabertooth 990FX Motherboard, with an AMD FX8150 processor, and Crossfired (2) Sapphire 6870 1 GB GDDR5 PCI E 2.1 x16 Video Cards. The memory is PNY DDR3 1866 (4) 4 GB sticks for a ...
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1answer
3k views

UEFI Crashing When Trying to Enter BIOS

I have a AMD FX8150 Processor in a ASUS Sabertooth 990FX Motherboard with (4) 4GB PNY DDR3 1866 Memory for a total of 16GB. I also have (2) Sapphire 6870 1GB GDDR5 PCI E 2.1 X16 Video Cards that I am ...
9
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2answers
14k views

Tools to modify UEFI Variables in Windows/Linux?

I have a DELL machine that use Phoenix SecureCore Tiano as its UEFI/BIOS However, it is totally not configurable as its UEFI shell & menus are hidden in BIOS Setup. I'm wondering if there were ...
2
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2answers
9k views

Install Windows 7 on second hard drive after Ubuntu 12.04… with UEFI

What I would like is to have Ubuntu installed on my 60GB SSD and Windows 7 installed on my 1TB HDD in a 100GB partition, leaving the remaining 900GB as a NTFS data partition that I could access from ...
22
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2answers
29k views

Make UEFI, GPT, Bootloader, SSD, USB, Linux and Windows work together

I like to use the latest hardware and the latest software; thus I have a Laptop (Lenovo X220) with UEFI instead of BIOS an SSD instead of an HDD GPT partitioning scheme instead of MBR USB to boot ...
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2answers
333 views

Should my Thinkpad X130e be able to charge an Android phone while turned off?

Having a shortage of power sockets, I wanted to charge my phone and my Thinkpad (X130e) by charging the notebook directly and the phone via USB. In the UEFI settings menu, I have enabled both "Always ...
3
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1answer
723 views

Suspend only works once after full power cycle with Asus P8Z68-V PRO GEN3

This one is strange. I can't seem to get suspend working more than once per power cycle. When I say "power cycle," I mean the only way to get one proper suspend is to cut power from the power supply ...
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1answer
7k views

Grub2 fails to chainload Windows 7 with error “invalid signature”

I've built a new UEFI 64-bit system with both Windows 7 and Ubuntu 11.10 installed (on separate hard drives). I'd like to be able to boot Windows 7 from the grub menu, but I have so far been ...
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1answer
2k views

Does Windows 8 Consumer Preview already support installation on UEFI-capable systems?

I recently bought a new Acer laptop that I believe already has UEFI, so I just want to know if I install Windows 8 Consumer Preview on it, will it be installed as a GPT partition using all UEFI ...
2
votes
1answer
4k views

How to identify UEFI-capable laptops?

I'm on the market for a UEFI-capable laptop for development purposes - looking to play around with UEFI boot and the UEFI shell in general. I'm having a hard time being able to identify machines with ...
0
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3answers
2k views

Windows 7 won't load unless other harddrives “disconnect”ed in UEFI shell

I have three disks, one GPT partitioned containing Windows 7 and Debian, the other MBR partitioned containing CentOS, and the other one MBR partitioned, empty. It used to work (loading Windows boot ...
6
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3answers
31k views

How to move an existing installation of Window 7 64bit to UEFI (from legacy)

I have a laptop that has Windows 7 64 bit Enterprise edition. It is already filled with plenty of Software and drivers. The laptop (Dell E6220) supports booting through UEFI, but the insatllition was ...