First attempt to install Mojave PB.
1) I could not create a proper installation pen drive using to Tonymac Clover build for lagacy. The drive was not seen as bootable by the PC, a laptop with UEFI that I do not want to hackintosh (at least right now) so it, but it froze on verbose mode with the maessage „Mach reboot”. Re-downloaded the installer and re-created the installation drive, but this time I did something different. After installing the custom Tonymac Clover build for Lagacy I have installed over it Clover for lagacy from Multibeast over it, then the latest official Clover build over this and added iMac 14.1 from System Definitions on the pen drive. This time the pen drive was seen by the PC and I was able to to boot from it, but no boot arguments seemed to be present on default, I had to add -v manualy.
2) I was able to boot the installer, I started the installation. Before first boot (I remember) the partition seems to have been converted from HFS+ to APFS. After exiting verbose mode, during the installation, the Apple logo with the progress bar appeared twice, first a blank grey screen with mouse pointer, then the Apple logo with the progress bar again with the installation screen progress. I has rebooted only once, not twice, like Sierra and High Sierra. When it finished, on first boot, the Apple logo with progress bar appeared twice, in between with the blank grey screen with the mouse pointer but, when the Welcome screen was suppose to be appear, the machine restarted. I have tried booting with -x, with different graphics injections, instead of my usual Nvidia, all ended up in the same reboot instead of a Welcome screen. My non-Metal Nvidia GPU most likely has something to do with it.
So, two main issues: 1) Clover needs some workaround, I guess the custom Tonymac Clover needs some tweal. 2) Failuri to load of the desktop on this non-Metal GPU (I guess). For now, reinstalled High Sierra, I guess a new beta build is on the way and I want to grab it as fast as I can.