UEFI vs Legacy boot mode

P4-630 · Aug 3, 2016

I just found out I'm running at "Legacy" boot mode.
Are there any downsides running my Skylake system in "Legacy" boot mode?

I don't really want to reinstall windows.
Also I have no problems with my SSD, speeds are as they should be.

Just booting up my system takes some time, maybe it just would be faster booting with UEFI?
My Asus Gaming laptop is booting up faster.
If thats the main difference :ohwell:

basco · Aug 3, 2016

i think you just loose secure boot and yes it should boot maybe little faster.
which win version?

P4-630 · Aug 3, 2016

basco said:
i think you just loose secure boot and yes it should boot maybe little faster.
which win version?

Windows 8.1 64bit

newtekie1 · Aug 3, 2016

The only real differences I've noticed are that UEFI mode boots faster and if you have your Motherboard's boot logo enabled, then it replaces the Blue Windows logo when Windows is booting. So you see the motherboard's boot logo the entire time, with the little white spinning dots under it when Windows is loading.

basco · Aug 3, 2016

i don't need that but quick secure boot explanation:
https://technet.microsoft.com/en-us/library/hh824987.aspx

Pill Monster · Aug 5, 2016

P4-630 said:
I just found out I'm running at "Legacy" boot mode.
Are there any downsides running my Skylake system in "Legacy" boot mode?

I don't really want to reinstall windows.
Also I have no problems with my SSD, speeds are as they should be.

You're all good. With UEFI boot partitions can be over 2TB, but that means reformatting drive to GPT.........prob not something you'd want to do....(or me

)
You aren't missing out on much., as mentioned above. Maybe Secure Boot......bleh

eidairaman1 · Aug 5, 2016

Legacy is compatability mode- works fine for me.

P4-630 · Aug 5, 2016

eidairaman1 said:
Legacy is compatability mode- works fine for me.

It's just the boot time, not so fast, my asus g750 is booting faster :ohwell:

Ok so besides secure boot, and a bit slower boot, I don't miss out on anything else then.

Thanks.

pigulici · Aug 5, 2016

I use legacy on my g752vy, just because I don't trust M$ to let him mess with my uefi/bios...

P4-630 · Aug 5, 2016

Did not check that before I installed windows, I would have expected that the default BIOS setting of my motherboard would be UEFI boot mode,
so it wasn't , I just found a few days ago... Oh well it works fine, I'm happy with it.

MIRTAZAPINE · Aug 5, 2016

I recommend you stick with legacy install instead to avoid any compatibility problem hardware or software. Uefi have the speed advantage for boot up but I don't find it to be a good trade-off for the compatibility problems that appeared. Secure boot for uefi is a pain if you decide to install multiple os as the other os is "locked" out. I used uefi for my previous install it is a lengthy install selecting the correct bios setting without borking the install. I'll move to uefi if I don't have a need for multiple os or legacy things. So far I seem to need it.

Nobody99 · Aug 6, 2016

I also recommend legacy mode. UEFI has to tight integration with the OS which is exactly the problem. There was a case where UEFI installed bloatware on fresh Windows installations automatically. It shouldn't be supposed to be able to do that unless the firmware was open-source.

eidairaman1 · Aug 6, 2016

My GPU has a physical bios switch on it. It was set to Compatability mode from the maker- i switched it to uefi no issues, I use Win 7 so secureboot is not an option

gupsterg · Aug 6, 2016

Switching to UEFI bios on GPU does not enable UEFI mode if motherboard is set CSM = On. Setting CSM = Off in my experience causes Windows 7 issues, even if installed as UEFI mode with GPT partition on storage device.

theFOoL · Aug 6, 2016

Plus with UEFI it uses the BIOS Image via replacing the Windows Boot Logo

(at least with my MB)

gupsterg · Aug 7, 2016

Yep, UEFI mode with Win 10 loading I get the Asus logo.

IIRC there maybe an option within motherboard UEFI to disable the Asus logo but not looked into it. On another forum I have read that what logo you get at Win 10 loading is the easiest way to know what bios mode OS is in.

If system is booting in legacy mode - you get Windows Logo.
If system is booting in UEFI mode - you get OEM logo.

Above also applies to Win 8 but not Win 7.

theFOoL · Aug 7, 2016

With win.7 also? Nice! But I'm sure you can do a hack to replace the image in the registry

gupsterg · Aug 7, 2016

rk3066 said:
With win.7 also? Nice!

gupsterg said:
but not Win 7.

Never looked into registry hack

.

System Name	AlderLake
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System Name	AlderLake
Processor	Intel i7 12700K P-Cores @ 5Ghz
Motherboard	Gigabyte Z690 Aorus Master
Cooling	Noctua NH-U12A 2 fans + Thermal Grizzly Kryonaut Extreme + 5 case fans
Memory	32GB DDR5 Corsair Dominator Platinum RGB 6000MT/s CL36
Video Card(s)	MSI RTX 2070 Super Gaming X Trio
Storage	Samsung 980 Pro 1TB + 970 Evo 500GB + 850 Pro 512GB + 860 Evo 1TB x2
Display(s)	23.8" Dell S2417DG 165Hz G-Sync 1440p
Case	Be quiet! Silent Base 600 - Window
Audio Device(s)	Panasonic SA-PMX94 / Realtek onboard + B&O speaker system / Harman Kardon Go + Play / Logitech G533
Power Supply	Seasonic Focus Plus Gold 750W
Mouse	Logitech MX Anywhere 2 Laser wireless
Keyboard	RAPOO E9270P Black 5GHz wireless
Software	Windows 11
Benchmark Scores	Cinebench R23 (Single Core) 1936 @ stock Cinebench R23 (Multi Core) 23006 @ stock

Processor	Intel Core i7 10850K@5.2GHz
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System Name	ibuytheusedstuff
Processor	5960x
Motherboard	x99 sabertooth
Cooling	old socket775 cooler
Memory	32 Viper
Video Card(s)	1080ti on morpheus 1
Storage	raptors+ssd
Display(s)	acer 120hz
Case	open bench
Audio Device(s)	onb
Power Supply	antec 1200 moar power
Mouse	mx 518
Keyboard	roccat arvo

UEFI vs Legacy boot mode

P4-630

basco

P4-630

newtekie1

Semi-Retired Folder

basco

Pill Monster

eidairaman1

The Exiled Airman

P4-630

pigulici

P4-630

MIRTAZAPINE

Nobody99

eidairaman1

The Exiled Airman

gupsterg

theFOoL

gupsterg

theFOoL

gupsterg

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