BIOS is up to date. Internal SATA is used for the Proxmox boot drive (has srv01gr_pve which is active before the hang), I believe I left it at the default AHCI mode. No remote volumes attached. Thank you for the response!
I've been trying to wrap my head around this issue for awhile now. I have Proxmox hosted on a Dell R720 with various drives put together into virtual drives using Dell's RAID card. Everything works well except for an about 15 minute delay during booting. The console shows: Reading all physical...