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If I installed Windows 10 with CSM on (legacy) how do I enable UEFI?

Lightmare
By Lightmare
in Windows
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I installed Windows 10 on a legacy Bios. How do I convert it to UEFI?

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Turn CSM off then reinstall Windows. There's no way to convert a Windows install between the two.

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11 minutes ago, Lightmare said:

https://www.tenforums.com/tutorials/81502-convert-windows-10-legacy-bios-uefi-without-data-loss.html

 

Would this not work?

Interesting, I've never encountered that tool before. Cannot say if it works but since it comes with Windows I see no reason why it wouldn't. Just be wary that if it fails it will likely take your data with it.

Main Rig:-

Ryzen 7 3800X | Asus ROG Strix X570-F Gaming | 16GB Team Group Dark Pro 3600Mhz | Corsair MP600 1TB PCIe Gen 4 | Sapphire 5700 XT Pulse | Corsair H115i Platinum | WD Black 1TB | WD Green 4TB | EVGA SuperNOVA G3 650W | Asus TUF GT501 | Samsung C27HG70 1440p 144hz HDR FreeSync 2 | Ubuntu 20.04.2 LTS |

 

Server:-

Intel NUC running Server 2019 + Synology DSM218+ with 2 x 4TB Toshiba NAS Ready HDDs (RAID0)

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Yes there are 3-rd party tools to make the change. However they are prone to failure, so backup first and be prepared to do a fresh install.

This link will show some helpful tips, read it first to get an idea of what is going on and decide if you want to move ahead.

https://www.windowscentral.com/how-convert-mbr-disk-gpt-move-bios-uefi-windows-10

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-> Moved to Windows

^^^^ That's my post ^^^^
<-- This is me --- That's your scrollbar -->
vvvv Who's there? vvvv

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Do not say that something is impossible if you don't know! Please!

Built-in tool called mbr2gpt and your current installation will be UEFI.

That's all. Tutorials are on internet. It may be done using windows installation media (with command line) or even from windows itself.

 

CMS doesn't mean that your system is installed in legacy mode btw.

 

 

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1 hour ago, homeap5 said:

Do not say that something is impossible if you don't know! Please!

Built-in tool called mbr2gpt and your current installation will be UEFI.

That's all. Tutorials are on internet. It may be done using windows installation media (with command line) or even from windows itself.

 

CMS doesn't mean that your system is installed in legacy mode btw.

 

 

The thing about not knowing something is you don't know. That's how people learn.

Main Rig:-

Ryzen 7 3800X | Asus ROG Strix X570-F Gaming | 16GB Team Group Dark Pro 3600Mhz | Corsair MP600 1TB PCIe Gen 4 | Sapphire 5700 XT Pulse | Corsair H115i Platinum | WD Black 1TB | WD Green 4TB | EVGA SuperNOVA G3 650W | Asus TUF GT501 | Samsung C27HG70 1440p 144hz HDR FreeSync 2 | Ubuntu 20.04.2 LTS |

 

Server:-

Intel NUC running Server 2019 + Synology DSM218+ with 2 x 4TB Toshiba NAS Ready HDDs (RAID0)

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