Dual-Booting Hackintosh & Linux

Hi, I know there are a lot of guides for dual booting, but almost all of them require you to
a) use an additional clean formatted drive or
b) install the MacOS first and THEN any other OS to have a dual boot on the same drive.
Unfortunately, I dont have either option available. (my current setup doesnt allow it and I refuse to format one of my hard drives just to set up macOS FIRST)
So does anyone have helpful tips or guides or anything for this use-case?
I do have an compatible system and enough disk space on one of my drives. I just need a way to install hackintosh on a specific partition without messing up all the rest.

submitted by /u/Thisisadrian
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