Mac OS 9 emulation on Linux Mint
Go to https://www.emaculation.com/forum/viewtopic.php?t=6553
Download sheep-shaver from this link www.open.ou.nl/hsp/downloads/SheepShaver_GCC44_SDL_Unix_29-07-2013.zip
Go to https://www.redundantrobot.com/sheepshaver
Download ROM file from https://www.redundantrobot.com/sheepshaver_files/roms/newworld86.rom.zip
It's necessary to rename the rom file to 'Mac OS ROM'
$ cd ~/Downloads
$ mv newworld86.rom Mac\ OS\ ROM
Download an Mac OS 9 iso from https://winworldpc.com/product/mac-os-9/90
It's necessary to set read-only permissions for the ISO
$ chmod 0444 Apple\ MacOS\ 9.0.4.iso
The rest of the guide: https://www.youtube.com/watch?v=hwX-QMPqrRg
How to enable sound: https://www.youtube.com/watch?v=-uealjJ2YCQ
Extra info if needed https://marstella.net/?p=219
Before running sheep-shaver, run sudo sysctl vm.mmap_min_addr=0