Like say you upgrade from MacOS 13 to 14. How does the OS still run when files are theoretically being replaced while the OS is still running.
In: 7
Imagine you have a list of all the things you do when you wake up in the morning, but you want to change that list.
So you make a new list, writing down all the things you want to do in your new routine, but you don’t touch or change your old list, in case something goes wrong and your new list doesn’t work with your video card drivers or something.
Then you put a post-it note on your old list that says ‘instead of starting this list, try to use the new list, unless you already tried to use the new list and it did not work. Then throw away this post it note and start the old list.’
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