Installed legacy Win10 SSD in Mac Pro running OCLP. Would like to convert to UEFI.

[dksoutha]

I am running Sonoma on a 4,1/5,1 cMP via OCLP 1.2.1 and have added a SSD with a Win10 legacy installation on it. Using that setup, how do I convert Win10 from legacy to UEFI?

Thanks in advance

 

[bogdanw]

“OpenCore's shortcomings
Does not support booting MBR-based operating systems
Work around is to chain-load rEFInd once in OpenCore”
https://dortania.github.io/OpenCore-Install-Guide/why-oc.html#opencore-s-shortcomings
https://www.rodsbooks.com/refind/

Otherwise, the only way I know is to reformat the Windows SSD as GPT and install Windows again.