Thanks for the responses!
I have upgraded to Virtual Environment 6.4-6. Same behavior occurs.
If I use 5.3.34-1 then I get to "Welcome to Proxmox..." and "pve login:"
If I use the other versions the terminal only goes this far, *not* reaching "pve login:"
[ 1.151533] bcma: Unsupported SPROM revision: 11
[ 1.151541] bcma-pci-bridge 0000:05:00.0: bus0: No SPROM available
Reading all physical volumes. This may take a while...
Found volume group "pve" using metadata type lva2
5 logical volumets) in volume group "pve" now active
/dev/mapper/pve-root: clean. 111572/3883008 files, 4384406/15532032 blocks