Bear with me a moment this IS about 10.14 beta - but background first..
I have a white MB early 2009 running 10.13.5 - thanks to the support/patches you and the crew here provide
I applied the bootROM patch using your tool found
here. I knowingly did this AT MY OWN RISK. My machine was NOT bricked as a result of this.... it works BUT...
BUT...when I power on at first I get a long full volume tone for about 4 seconds and the DVD drive starts, the power light stays on but the screen is black. It stays like that even if I leave it for 10 minutes.
If after this ‘almost start’, I hold the power button down to force a shut down, wait a couple of seconds, then press the power button again it boots again - but this time normally.
Should it do this? If not, have you any suggestions as to how I should fix it, so it just boots first time.
I'd like to use the patcher for macOS 10.14 Mojave on this machine but I'm nervous about using it if I have somehow not applied the bootROM patch for HS correctly.
(I have a copy of the removal tool through the link posted some time ago if I need to use that???)
Thanks again for all the work in getting these patches to work.