Windows 10: Should I change BIOS Mode to UEFI?

Hello,

I would like to dual boot Win 10 (20H2, Build 19042.804) with Ubuntu on my Dell Inspiron 7520. When I open "System Information" I see Bios Mode Legacy. And when I run bcedit from the command line I get: "path \Windows\system32\winload.exe". So I think this means I am using Legacy BIOS. I also ran diskpart and list disk and confirm that my disks are not partitioned in GPT so I guess they must be MBR.

There are instructions here about setting up the dual boot and it talks about needing UEFI. Is it possible to update my laptop to use UEFI? Or maybe I don't need to?

I find all this very confusing! There are instructions about Converting Windows 10 from Legacy BIOS to UEFI and it says that you must have UEFI firmware (BIOS) enabled.

I have the Dell BIOS firmware A04 on my laptop but when I hit F12 on boot up I don't see any mention of UEFI in the BIOS screens. How do I enable UEFI firmware on my laptop? Is that my first step?

Cheers,

:)

 

Support Had Me Change From UEFI to Legacy mode in BIOS Re: DISASTER

This was Acronis True Image 2018 support not MS or Lenovo (P51). Those familiar with True Image know that you can create bootable media on a flash drive to run the software. No problem with True Image 2017 but True Image 2018 did not work. Although the flash drive loaded the program the GUI was garbled and I was unable to navigate. Support had me switch from UEFI back to Legacy and that was a bad idea. Sorry for the caps but this was what I wrote back to Acronis support. FYI the rest of the message was not in caps:

SUPPORT: I have discussed this issue with the Experts team and they have suggested testing whether changing from UEFI to Legacy mode in BIOS fixes the issue or not. This step is suggested for testing purpose only.THAT WAS A TERRIBLE SUGGESTION. I WENT INTO THE BIOS AND DID AS YOU INSTRUCTED AND CHANGED FROM UEFI TO LEGACY. I CLICKED EXIT AND SAVE AND WITH THE FLASH DRIVE PLUGGED IN THE 2018 BOOTABLE MEDIA I WENT TO BOOT MENU OPTIONS AND CHOOSE BOOT FROM FLASH DRIVE AND I WAS DROPPED BACK INTO THE BOOT MENU OPTION. SEE ENCLOSED PICTURE. I THEN SELECTED BOOT FROM THE SSD DRIVE AND I WAS AGAIN STUCK IN A LOOP THAT DROPPED ME BACK INTO THE BOOT MENU OPTION. I THEN TRIED BOOTING FROM THE SECOND INTERNAL HDD OPTION AND AGAIN WAS DROPPED BACK INTO THE BOOT MENU. I COULD NOT GET BACK INTO THE BIOS TO CHANGE BACK TO UEFI FROM LEGACY. I HAD TO DO A HARD SHUTDOWN AND POWER BACK ON AND ONLY THEN WAS I ABLE TO GET INTO THE BIOS AND CHANGE BACK FROM LEGACY TO UEFI.

This is a pic of the loop I was caught up in. Why do you all think I was not able to boot either from the flash drive or the SSD or the HDD once I changed from UEFI to Legacy in the BIOS? TIA.

 

Problem Regarding Bios Change from UEFI to Legacy

I have hp pavilion p045tx with windows 10 pro. I recently install Ubuntu with windows 10 so for that I convert my bios setting from UEFI to Legacy mode for install third party software like wireless Driver and all in Ubuntu.
But after every restart the bios setting change to default and that is to UEFI mode and that will cause an problem of no OS detect. Every time I have to go to bios setting and enable the legacy mode to start my OS. Can anyone suggest me what to do in this
case.

 

Windows fails to detect UEFI BIOS, assumes Legacy instead

Hi,

Due to some string of events, my computer has quick boot enabled in BIOS. I need to load UEFI to change some things, and am unable to because this setting is enabled. I assumed there was a way to reboot into UEFI from inside Windows 10, so I looked up how
and found the answer: There is an option in the "Advanced startup" menus to do this. Unfortunately, this option seems to be hidden if Windows 10 erroneously detects that you are using legacy BIOS instead of UEFI. This appears to be the case in my current install
(in MSINFO the BIOS Mode is set to Legacy).

My questions are:

• How do I change BIOS Mode to UEFI in my current install?
• How do I make sure this remains the case in future OS resets/reformats?
• Similarly, when building other computers in the future, how do I make sure Windows 10 does not make this same error?

My questions are not:

• How do I access my BIOS despite Windows 10 misidentifying my BIOS Mode?

Thank you for your time,

Alex