Boot halts at trying to mount root

[Matthew Seaman]

On 05/11/2018 17:21, David K. Gerry wrote:
> 	I'm upgrading from 11.0 to 11.1. I did installkernel, installworld,
> mergemaster and rebooted. The kernel loads but when it gets to "trying
> to mount root ufs:/dev/gpt/HoD_Root [rw]" it stops. There is no error
> message.

Does /dev/gpt/HoD_Root exist after you've booted via your thumb drive? 
Is the root partition there but under a different label perhaps?

What does 'gpart show -l ada0' tell you?  (Replace 'ada0' for whatever 
device name is correct for your boot drive)

	Cheers,

	Matthew