Opencore on a different drive

[gnappoman]

Hello,

 

I have a working Big sur Installation on my HP 800 G1 SFF, since my bios can not boot directly from nvme drives, I am currently booting from a sata drive. 

 

The goal is to move my big sur installation to one of my nvme drives.

 

Currently my drives are three

 

1- SATA HDD (Big sur is installed here) the EFI partition contains OPENCORE 0.6.5 which sees the other drives thanks to NvmExpressDxe.efi

 

2- PCIex NVME (windows 10) the EFI partition contains standard windows EFI files

 

3- PCIex NVME (Big sur cloned with ccc) the EFI partition is cloned from drive 1

 

Opencore from drive n 1 sees both windows (and boots fine) and the cloned big sur nvme drive, but when I try to boot from this one, I immediately get a black screen.

 

What should I put inside drive 3 EFI?

 

I need to boot from the SATA drive, since my bios doesn't see NVME drives..

Thanks

[PippoX0]

I’m booting form sata drive to nvme SSD too because my bios doesn’t boot directly to nvme drive.
I can boot windows10 and Big Sur. ( i’m using Clover , but OC is the same)

You need to install directly BS on nvme ( sometimes cloning doesn’t work in BS / Monterey)

If you don’t want to boot from sata drive , you can use an USB Booting pen ... as a backup booting option

Cheers