error disk

Hello, I have been looking for a way to install proxmox v8 on my server, Thinksystem SR250, but there is always a “No Hard Disk Found” problem, I have created a virtual disk raid, and have tried to replace the disk, but there is no result. Is there anyone who can help me? Thank you.

I recently installed proxmox on my notebook without knowing that it would make it a dedicated server and I wanted to go back to windows and deleted all partitions including the efi, but now I can't boot from the pendrive because the error "error disk not found" happens grub rescue and I came...