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UEFI Instant Boot?

post #1 of 11
Thread Starter 
A couple years ago (2009?) when UEFI was a newish thing, the major BIOS vendors were all boasting about how UEFI would give PCs a smartphone-like instant power-on experience - I remember Phoenix doing a demo with an SSD-equipped system, where the POST process took < 1 second and total boot time took about 10 seconds.

Fast forward to 2012, and while nearly all mobos now support UEFI, it's no faster than BIOS. In fact, booting via UEFI usually slows down the POST process and therefore should only be done if you want to install Windows on a 2.2 TB+ partition.

Is UEFI Instant Boot simply overhyped vaporware?
The Ancient
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post #2 of 11
Actually I think it's faster, my brother's H67 rig boots up significantly faster than my x58 gaming rig. First thing I noticed actually when I built his PC, is that it boots fast.

Edit: What I mean here is that it posts & it gets to the windows loading screen faster.
Edited by MReda - 9/15/12 at 2:46am
post #3 of 11
Quote:
Originally Posted by Peon View Post

A couple years ago (2009?) when UEFI was a newish thing, the major BIOS vendors were all boasting about how UEFI would give PCs a smartphone-like instant power-on experience - I remember Phoenix doing a demo with an SSD-equipped system, where the POST process took < 1 second and total boot time took about 10 seconds.
Fast forward to 2012, and while nearly all mobos now support UEFI, it's no faster than BIOS. In fact, booting via UEFI usually slows down the POST process and therefore should only be done if you want to install Windows on a 2.2 TB+ partition.
Is UEFI Instant Boot simply overhyped vaporware?

EFI is far from new, just us non-server, and non-apple people are finally getting hold of it. In some cases it posts fast, in others it seems to slow posting, that's probably more to do with the system than just how the EFI is implemented. Newer boards (like the Crosshair V Z) for example have a fast boot switch that does something dramatic to its post and boot time in general, but that is more of a Windows 8 thing. (Will comment more as I play with my new board- it has this switch available).
    
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post #4 of 11
EFI is the prequel to UEFI. The latter is closed source and not supported anymore by Intel. The first UEFI edition was based on the deprecated EFI 1.10 (final release of EFI) back in 2005. UEFI is managed by the Unified EFI Forum mostly major industry players although anyone is allowed to join just have to meet some few requirements. No, worries on the confusion with EFI and UEFI it happens a lot.

I am not sure what kind of motherboard or where you getting that but UEFI does far more than faster bootups, for example it is far far easier to read and understand UEFI code than BIOS. BIOS is in Assembly while UEFI is written in C language. So many reasons why UEFI is much better:

Here is a good explaination:

Edited by wolf_08 - 9/15/12 at 3:31am
post #5 of 11
Quote:
Originally Posted by wolf_08 View Post

EFI is the prequel to UEFI. The latter is closed source and not supported anymore by Intel. The first UEFI edition was based on the deprecated EFI 1.10 (final release of EFI) back in 2005. UEFI is managed by the Unified EFI Forum mostly major industry players although anyone is allowed to join just have to meet some few requirements. No, worries on the confusion with EFI and UEFI it happens a lot.

Nothing confusing about it, EFI = UEFI. Concept wise, anyways. Intel still licenses EFI to folks who want it but that's about it, they gave it to the UEFI forum for further development, rather interesting list of companies there. The only confusion was as to who owned it originally, but that was easy to find. The original EFI concept has been around a long time though, and I know Apple has used EFI for quite a while as well. Do they UEFI nowadays? Not sarcasm, I'm curious and don't own an Apple computer.

As far as "instant boot" or skipping the majority of the POST process, I don't see it. That said, you mention a "smartphone" like boot time, if my computer booted as slow as most Android phones, I'd kill myself. thumb.gif

Edit: No, waking from S3 doesn't count.
Edited by mezmenir - 9/15/12 at 3:42am
    
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post #6 of 11
Coming from X58 to Z77 my boot times have greatly decreased. The actual boot is faster but I also have options in the BIOS to speed it up too.
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post #7 of 11
Yes, UEFI might have EFI concepts but UEFI is open standard and pretty much anyone can code for it or look at the source code

They mean for instant boot in theory if you had a high-speed SSD with TRIM and a tweaked OS. It might be far faster boot up but I am unsure if instant maybe faster than on a traditional BIOS motherboard that is for sure.
Edited by wolf_08 - 9/15/12 at 7:04am
post #8 of 11
Thread Starter 
What the UEFI Forum was saying back then was that UEFI-equipped motherboards would POST in less than 1 second. Clearly, that hasn't happened.

Out of the 10+ systems I've worked with in the past year, the only one that could actually POST faster than I could blink was a prebuilt Lenovo M91p, and that system was booting via legacy BIOS mode, not UEFI rolleyes.gif
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post #9 of 11
Ah, you see POST. You see that is where I was confused. POST is the Power-on self-test so that does not mean the loading straight to your Operation System, yes UEFI can do that in some cases. Unless you mean the phase after that which is typically the bootstrap loader (UEFI, BIOS etc) of which what OS is your primary it goes to that bootloader (GRUB, BOOTMGR etc) of which than loads whatever you use/pick if you had more than. Now this is just a short description and really is a very quick process.

But from pressing the power on button (not in any sort of hibernation, sleep) to fully loaded if you have a userid, maybe not. But like I said on a fast tweaked SSD and a tweaked OS with just going straight on the desktop without any user validation - it could be possible but under 1 sec I do not believe that can be done, maybe in a testing environment with all the people who development the software and hardware, but than that will not be good for anyone. biggrin.gif

They could be talking about in the future tense with that. I am not trying to disagree with you but technology analysis, technology moves at a uneven pace so that sometimes your predictions come out incorrect.
Edited by wolf_08 - 9/17/12 at 6:06am
post #10 of 11
Thread Starter 
Sorry for the confusion. "UEFI Instant Boot" is a term that they (as in the UEFI Forum) invented, and I just figured that sticking to industry standard, if misleading, terms would be best, but I guess not.

Anyways, I looked into it some more and discovered that it's basically snake oil - UEFI can POST in under 1 second, but only if you strip out all of the dynamic hardware detection code (e.g. CPU upgrade, additional RAM, new GPU) and remove support for additional motherboard chips (e.g. onboard audio, eSATA, Thunderbolt, etc.) and get rid of PCIe. I suppose that it might be feasible for SoC-based devices like tablets, but I doubt it'll ever happen for a typical desktop/laptop.
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