I performed a search of the forums and found this post that suggests switching to another USB port:

https://forums.ghostbsd.org/viewtopic.p ... lash#p8379

Unfortunately, I find that the problem persists in each of the three ports on my laptop. I even tried more than one iso.

I suspect that I can reinstall and select some other option, but thought I should solicit some advice on what that might be.

I chose to do a whole disk install, selected the USB and 8000 MB of swap for a 128GB USB drive with 116GB of available space. I also chose to indicate my full name as my three initials the hostname as MPII.

I don't recall making any other selections but can repeat the process if that would be helpful.

After further investigation, I've come to think that it might be that I'm installing onto a USB instead of simply creating live media on USB. I've been able to perform a regular install using FreeBSD. This is desirable from the standpoint that it's persistent and allows me to explore options with bhyve that interest me. I was hoping to similarly play with GhostBSD before making a full commitment. I will try to make the bootable USB using dd instead and see what that affords me. I don't expect that to allow the persistence I would like. And I wonder if there is some reason that the install option has been made unavailable or was the consequence of other decision not explicitly related to that option.

Has of now GhostBSD installer does not support installation to a USB.