Im rookie pls help, (format)

What format should i use when creating a partition for the installer on the disk. I dont have empty external hd so im following this guide: https://www.youtube.com/watch?v=0YR2EK9ug5o I have 1h 32min left until my MacOS 12.7.5 has downloaded so take your time. I have watched a ton of mr.macintosh videos so now i feel like im ready to actually do it. I have iMac 14.1 (late 2013 21.5 500gb ssd and 8gb ram)

submitted by /u/MiskaWave
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