Hello @pd4ajm! Sorry to hear you are experiencing boot failures. From your description of the problem it only occurs on cold boots, but not after a reboot?
I have just posted a solution for the problem @wjt have pointed you, but that problem occurs on every boot, as far as we know. If it is the same problem, those instructions should fix it, but let’s make sure it is indeed the same problem first. Does your error look anything like the picture on Error no such device ostree? If not, can you also post a picture?