We're trying to modernize the infrastructure and this server series is fighting back, I think some guy named Murphy built it and we may have to threaten early retirement on it to get it to behave.
Anyways, installing ESXi on a USB drive:
Other test computers install/boot just fine, on this server it does not.
Vanilla or HP ESXi with or without the installmbr command on bootup will return - Error System Disk Not Found
Put in the current ESXi 5.5 drive and there's no complaints, it boots perfectly!
Using VSphere to upgrade to 6.5 will fail due an issue with the partition map with the VMFS - Available disk space appears to have shrunk, can't have partition outside the disk!
What is the secret to eradicate the haunts of Murphy from this server?