Difference: installing win10 in uefi mode and not

AnTiLooP

Supremacy Member
Joined
Jan 1, 2000
Messages
6,236
Reaction score
89
Does anyone know the difference? Tbh i never knew that this was an option and only found out recently it's available.

Hard to find information on it though, regarding differences pros/cons.
 

Psycovirus

Senior Member
Joined
Jan 3, 2007
Messages
1,789
Reaction score
381
Installing Windows 10 on UEFI is faster to boot than Legacy.

My system, UEFI Fast boot in about 5 seconds compared to Legacy's 14 sec...

Other than that, UEFI can only have 1 OS while Legacy, you can boot different OS(s)

Edit: I'm wrong about UEFI only having 1 OS. Can be configured for multi boot.
 
Last edited:

hawthorne

Arch-Supremacy Member
Joined
May 9, 2006
Messages
11,712
Reaction score
208
Recently tried UEFI, and it bricked my Mobo bios. Dun ask / tell me it's not possible etc. It just happened. I also dunno y

RMAed Mobo and running back on legacy. The Mobo is a H270 one, so it's brand new
 
Last edited:

AnTiLooP

Supremacy Member
Joined
Jan 1, 2000
Messages
6,236
Reaction score
89
Recently tried UEFI, and it bricked my Mobo bios. Dun ask / tell me it's not possible etc. It just happened. I also dunno y

RMAed Mobo and running back on legacy. The Mobo is a H270 one, so it's brand new

Isnt uefi already present on current gen of mobos ?
 

hawthorne

Arch-Supremacy Member
Joined
May 9, 2006
Messages
11,712
Reaction score
208
Isnt uefi already present on current gen of mobos ?

Yea. I meant enabled UEFI boot and installed Windows on UEFI mode. Doing this bricked my Mobo. Boot loop, no BIOS screen.

So I RMAed it, and configured it to leqacy mode and reinstalled windows
 

86technie

High Supremacy Member
Joined
Jun 8, 2006
Messages
40,502
Reaction score
6,026
Isnt uefi already present on current gen of mobos ?

Since the introduction of Windows 8, UEFI shorten boot time.
From BIOS to desktop instantly that is how UEFI boots.
Legacy is BIOS to OS partition than desktop
 

AnTiLooP

Supremacy Member
Joined
Jan 1, 2000
Messages
6,236
Reaction score
89
Since the introduction of Windows 8, UEFI shorten boot time.
From BIOS to desktop instantly that is how UEFI boots.
Legacy is BIOS to OS partition than desktop

Thanks. Guess there is no way to convert it right?
 

AnTiLooP

Supremacy Member
Joined
Jan 1, 2000
Messages
6,236
Reaction score
89
Have you heard of Google?

https://www.tenforums.com/tutorials/5831-boot-uefi-firmware-settings-inside-windows-10-a.html

Of cause but....

This option is only available if windows was build in uefi mode and its irrelevant to the article uve posted.
 

Koenig168

Arch-Supremacy Member
Joined
Nov 4, 2007
Messages
10,091
Reaction score
1,773
Thanks. Guess there is no way to convert it right?

Your BIOS might have an option to boot either in Legacy or UEFI mode.

Do note that if you change modes, you will need to do a fresh Windows installation.
 

Rock-kun

Senior Member
Joined
Sep 10, 2007
Messages
991
Reaction score
1
Other than that, UEFI can only have 1 OS while Legacy, you can boot different OS(s)

Don't spread misinformation. Multiboot is very possible on EFI.

In legacy mode, the boot disk cannot be formatted as GPT and the bootloader is installed on the first sector of the HDD known as the MBR. This MBR is not touchable by any filesystem and OSes under most situations.

On EFI, the OS installer creates a 100MB FAT32 EFI system partition and dumps the bootloader in this partition.

Since the introduction of Windows 8, UEFI shorten boot time.
From BIOS to desktop instantly that is how UEFI boots.
Legacy is BIOS to OS partition than desktop

EFI does not skip the OS partition. It still has to access the EFI system partition on the HDD.

Fast Boot is not a feature of EFI. It already existed on a few legacy BIOSes primarily to allow Windows to skip hardware initialization.

Legacy BIOS cannot accept boot drives larger than 2,1TB. The 64bit nature of EFI eliminates this restriction.
 
Last edited:
Joined
Oct 26, 2011
Messages
48,310
Reaction score
7,450
Yea. I meant enabled UEFI boot and installed Windows on UEFI mode. Doing this bricked my Mobo. Boot loop, no BIOS screen.

So I RMAed it, and configured it to leqacy mode and reinstalled windows

yes i using legacy mode too.
personally feel uefi too unsafe as it allow 3rd party to mod your bios.
 

hawthorne

Arch-Supremacy Member
Joined
May 9, 2006
Messages
11,712
Reaction score
208
Your BIOS might have an option to boot either in Legacy or UEFI mode.

Do note that if you change modes, you will need to do a fresh Windows installation.

Not exactly. U install in UEFI, windows will auto create ur partitioning in GPT format. U can still change to legacy and boot as normal.

But if u install in legacy, windows will create a bootloader in FAT. If u change to UEFI after this, u wun be able to boot
 
Important Forum Advisory Note
This forum is moderated by volunteer moderators who will react only to members' feedback on posts. Moderators are not employees or representatives of HWZ Forums. Forum members and moderators are responsible for their own posts. Please refer to our Community Guidelines and Standards and Terms and Conditions for more information.
Top