"if I were to ask my sister to format a HDD to a particular filesystem she wouldn't have the first clue as to what to do"
Why would you be asking your sister this question - do you not know how to format a HDD? What if I asked my wife how to change the oil in the car, or perform open heart surgery?? Don't understand the point of this comment.
Would my wife be asking me these questions is the better analogy I think, because why would she be wanting to change the oil - she would have me do it, or takes it to the shop. And for heart surgery -- pretty sure going to get someone with experience in that field to perform any that might be required.
If I told her step by step with pictures how to change the oil.. What do you think the outcome would be?? My guess is a mess!! So should I even attempt to tell her how to change the oil??
So this person has never installed an OS before? Does not understand the basic principles behind how an OS is installed and partitioning and formatting is done - but they want to install a unsupported OS on a device it was not designed for? So my wife doesn't want to know how to change the oil, she wants to know how to exchange the engine with a different one out of a boat to use in the car
But lets start with first step - how do I open the hood
To be honest I would love nothing more to discuss how partitioning and formatting of different file systems are put onto a disk - and if the question was worded as a curiosity sort of question I would spend all day going over any question the OP could have. But worded in such a way - I just have to ask why?? Clearly the outcome no matter the level of detail given is not going to be good..