EFI stands for Extensible Firmware Interface, and is an updated version of BIOS. It sits between firmware and the operating system in the software stack.

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What is the maximum number of partitions with EFI?

I was wondering what is the maximum number of partition on an GPT-partitionned drive under Linux. The GPT partition table can contain up to 128 partitions, but the device nodes for /dev/sda? (as ...
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How to know if my BIOS supports UEFI?

I recently bought a new Dell notebook for my girlfriend and I want to know if the computer comes with a UEFI BIOS, unfortunately I didnt find any information in the manual or on Windows, is there some ...
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Update MAC EFI to EFI 2.x

I've been doing a lot of research about installing Windows on Mac - without having a MBR and such. I'm trying to create a pure GPT/EFI system without MBR. Currently, Mac Bootcamp creates a hybrid ...
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efi and linux - bootloaders, and any performance advantage?

Modern systems seem to be EFI based, and while there's a specific version of lilo that works with it, i can't seem to find any mention of a efi varient of grub (edit - on modern debian derivative ...
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iMac boot from linux partition on external drive

I have the following "setup:" iMac (no internal drive/dead) --------- (Firewire) ------- [[MAC OS X]] | | | | (USB) | | | | [[MISC STORAGE PARTITION] [MISC STORAGE PARTITION] [EXT2 UBUNTU PARTITION]] ...
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Is there a list of available boot-args for darwin / OS X

In OS X you can set boot parameters with nvram boot-args=[options] Where the options I know about -v (verbose) -x (safe mode) and arch=x86_64 (boot into 64 bit kernel on 64 bit capable machines). ...
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HP ProBook custom boot logo

my HP ProBook 5420s supports custom boot logo but I can't get it working. It has UEFI (not BIOS), custom boot logo option is on and I have placed a 1366x768 (native.. also tried 1024x768 as guide ...
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How do you boot into EFI settings on an x86-64 MacBook Pro from 2010?

I'd like to get to the EFI settings page on my MacBook Pro. I haven't been able to find the keyboard sequence required to boot into this mode...is this still an option on recent MacBook Pro's or do I ...
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How to use ATA security on a hard disk in practice?

My SSD HD supports ATA Security. Does Macbook EFI and linux support it? I know hdparm does. Who will do the unlock at each bootup? Can I still set a password without erasing the disk? Update: removed ...
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Can BIOS be eventually upgraded to EFI?

I have an Intel PM55 chipset in my notebook. Reportedly Windows 8 (aka Windows Next) will not support BIOS-based systems. Is my motherboard forward-compatible to house an EFI firmware?
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How to force Mac to into dirty shutdown state on every power off?

As Far as I can tell no one has actually solved this debacle. How do you get a mac mini to power on every time the UPS it is connected to restores power? It is easy enough to have the UPS communicate ...
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On dual-boot iMac, after fixing “EFI Boot” issue, will booting Windows cause the same issue again?

On my dual-boot iMac, after fixing the well-known "EFI Boot" issue, will booting Windows cause the same issue again? I'm hesitant to try booting Windows until I hear from others. Details: It all ...
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EFI pxe network boot error [closed]

Asking this on both serverfault and superuser. When attempting to network boot RHEL 5.4 on an old ia64 machine I get the following error : So I've basically followed the tutorial here : ...
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Bootcamp doesn't boot after resize

I just resized my Windows 7 NTFS partition on my macbook using GParted. Now, when I hold down the option key at startup, this partition doesn't show up. My OS X partition shows up normally. So I can't ...
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Free, scriptable, partition manager for Windows

Are there any free scriptable partition managers for windows that can create an EFI partition? (Identifier 0xEF) EDIT: It needs to run on Windows XP (BartPE) EDIT 2: So it seems Intel has a 32-bit ...
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2answers
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Unable to boot into Windows partitions on early-2008 MacBook Pro using Crucial M225 128gb SSD

I purchased a Crucial CT128M225 SSD on October 19th for my early-2008 17" MacBook Pro this week (Boot ROM: MBP41.00C1.B03). I'm currently running OSX 10.6.1. The Apple EFI 1.7 Firmware Updater says ...
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Can I delete the 'EFI System Partition' without harming other data on the drive?

I have three external HDDs in a USB enclosure. After a recent upgrade to Windows 7, during which these three drives were actually installed inside the PC tower, two of the three drives now have a ...
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How do I remove an EFI System partition from a drive in Windows 7?

I have an external HD which used to be my TimeMachine drive. I got a different drive for that, so I want the original drive back as an external on my Windows box, but it has this random 200 MB ...
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Snow Leopard 64 bits mode (EFI64 Firmware)

How do I get the EFI64 firmware on my iMac 20" (late 2006) with Intel Core 2 Duo?
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Convert a GPT disk to MBR from XP

So I took some files with me on my external HDD while going on vacation. Through a series of events, I ended up storing the data in a NTFS formatted partition defined in a GUID Partition Table. The ...