Trying to install Zorin OS 16, installation always fails with "Unable to install Grub in /dev/sda"

[Aravisian]

Regailia776, this bug may be affecting you:
NOTE:

USB install fails - the List

Response direct from ZorinGroup on this Issue; Hi Aravisian, thanks for letting us know about this issue. We've also received reports of the same EFI issue in our email inboxes, which seems to mainly affect Dell computers. We've been investigating it for the past while and have just found that it's probably an issue with the upstream shim package, which you can learn more about here: The Ubuntu developers have supplied a fix for it a couple of hours ago and we're currently testing it to make…