Question Can I Change Boot Installation from legacy mode to UEFI?

[RitSin]

I have a Dell XPS 14 l421x model laptop which came with window 7 pros into legacy boot mode

so I want to know can I upgrade my window 7 into window 10 and change the legacy boot mode option into UEFI without having the fresh installation of window 10

or there are any ways please keep me updated

thanks in advance

 

[PiVO 7717]

Fresh install saves headaches, time and saves your parts from getting damaged thanks to messing around

 

[USAFRet]

I have a Dell XPS 14 l421x model laptop which came with window 7 pros into legacy boot mode

so I want to know can I upgrade my window 7 into window 10 and change the legacy boot mode option into UEFI without having the fresh installation of window 10

or there are any ways please keep me updated

thanks in advance

Why is a fresh Win 10 install off the table?

That IS the best way to do this.

 

[RitSin]

Fresh install saves headaches, time and saves your parts from getting damaged thanks to messing around

if I do fresh install my original window 7 would be lost
I think

 

[RitSin]

Why is a fresh Win 10 install off the table?

That IS the best way to do this.

i didn't understand

 

[TerryLaze]

if I do fresh install my original window 7 would be lost
I think

Your windows 7 will be lost on an upgrade as well, it will turn into 10 it will not do a dual boot if you upgrade.

Once you upgrade to win10 you can convert your system to UEFI.
https://www.windowscentral.com/how-convert-mbr-disk-gpt-move-bios-uefi-windows-10

 

[USAFRet]

i didn't understand

What are you actually trying to do?

What do you have now, and what do you want the end state to be?

 

[lance88]

Upgrade to win 10 and proceed with the below:

https://docs.microsoft.com/de-de/windows/deployment/mbr-to-gpt?ranMID=46131&ranEAID=kXQk6*ivFEQ&ranSiteID=kXQk6.ivFEQ-HYF4.x9QUSSl6AxR2Zv4Jw&epi=kXQk6.ivFEQ-HYF4.x9QUSSl6AxR2Zv4Jw&irgwc=1&OCID=AID2200057_aff_7806_1243925&tduid=(ir__tiiqswk92ckf60gaiyumtzj9rf2xra91rkcamwya00)(7806)(1243925)(kXQk6.ivFEQ-HYF4.x9QUSSl6AxR2Zv4Jw)()&irclickid=_tiiqswk92ckf60gaiyumtzj9rf2xra91rkcamwya00

Checks if your drive is MBR format

Follow the link to convert MBR to GPT, you will need to use /allowFullOS to work.

You can specific the disk number if its not 0. Eg, mbr2gpt /validate /disk:0 /allowFullOS

Once completed, restart and boot immediately into bios page and change boot mode to UEFI and viola.



If you yet to have windows installed, you can refer to the below solution:

-Have a USB and create a bootable win

-Remain boot set as UEFI and not CSM/legacy

-Have Windows 8.1/ 10 WHQL Support"="Enabled"

-Boot using the USB and initialize the drive as GPT then begin the installation

You should able to see nvme ssd at the end result while remain as UEFI bios.

 

[USAFRet]

Upgrade to win 10 and proceed with the below:

This thread is 6 months old.
Doubtful the OP is still fighting with this.