HD3000 on High Sierra

[RehabMan]

So I managed to get the keyboard to work.
However, once I try to install clover on the hard drive I get "No bootable device found" after the POST, regardless if I use Multibeast or RehabMan's manual instructions from the Laptop guide page. After that I cannot boot even with the USB (I can't see what caused the panic because of no-scroll-up-in-verbose), -x -s or -f switches don't work so I can't access the log. I also get the same message if I try to create USB manually, only Unibeast works for me. I wonder if this has something to do with the MBR/GPT and BIOS? Perhaps APFS conversion?

The weird part is that after installing Clover on HDD I am getting the "crypto" point KP even after booting from the USB, in other words, that's the point of no return for me - the only thing I can do (as usual) is to wipe the drive clean on another computer and reinstall, but I can only boot from an USB... I did try copying the EFI from USB to SSD but no success there.

BIOS MBR/legacy boot is often very picky.
Usually required:
- active partition (if GPT, set EFI partition active in the MBR)
- may require MBR/GPT hybrid (read about gptsync in Linux), especially if you have Windows installed
- may require pure MBR (read about gdisk in Linux)
- either case of above, will need an active partition (set to EFI if no Windows, set to Windows partition if you have Windows installed)