Installing macOS High Sierra in a Hackintosh is hard, The oldest methods do not work, Apple broke the System and making Hackintosh even harder.
MacPwn was updated to support High Sierra. Now MacPwn only Support Clover boot-loader in UEFI mode only, it is time to leave Legacy behind. You can install Chameleon manually and try booting from it, but MacPwn does not support officially
What do you need to Start Hackintoshing High Sierra?
Make sure macOS Installer name is exactly as “Install macOS High Sierra.app”, make sure to Backup application, Sometimes the installer could damage “Install macOS High Sierra.app” as it tries to modify files.
The screenshot below may differ with MacPwn versions
“Install macOS High Sierra.app” must be present in the Applications folder
Your computer must support UEFI BIOS booting
Erase your USB as Mac OS Extended under GUID Partition Scheme
Because clover UEFI needs an EFI Partition to become bootable, after erasing open “MacPwn High Sierra”; follow on-screen instructions.
After making the bootable USB, Reboot and boot from the USB that you made.
High Sierra will start loading in verbose mode, and it may take a while
Erase hard disk for Hackintosh High Sierra Installation, Erase as format “Mac OS Extended (Journaled)” & Partition scheme “GUID.”
Install macOS in erased Volume, “Sierra” in the example below (You can rename as whatever name as you want, “Sierra” is used because of easiness), Untick “Upgrade Sierra to APFS”; because APFS file system is not recommended for a Hackintosh.
The installation will take some time, for most of the time Installation will complete successfully but sometimes it may show an error which is OK, The System will reboot automatically, If it throws an error, reboot manually.
Again you have to boot from the Same USB, and select the Volume “Sierra” with text “Boot macOS Install from Sierra.”
This step has to be repeated Twice or Thrice; Installer will automatically reboot after successful installation.
After successful installation of macOS High Sierra. Setup Basic configuration and User Profile, You will be on Desktop of Hackintosh High Sierra.