Hoping this helps someone else. When setting up a Supermicro AS-1015A-MT 1U w/H13SAE-MF & Ryzen processor, trying to boot Debian 12 or Proxmox 8.3 media results in "Welcome to Grub" and the machine stalling, sometimes also showing "error: no such device: /.disk/info". The fix? Disconnect the display (!) or wait 30-45 minutes for the installer to show up otherwise. The IPMI KVM works fine for setup. Thanks to mirk_daniel on the Proxmox forums for the tip! https://forum.proxmox.com/threads/installation-error-grub-error-disk-info-proxmox-ve-8-3.159131/