I need someone to put this together in the most fool-proof way possible.
I recently reinstalled the OS on my Macbook Air 2014 (Yosemite) as I had a ton of useless files as it was acting super duper slow so now that I want to install Photoshop, Illustrator and InDesign (which my entire life depends on as I'm a design student) it gives me an error: Installation on case-sensitive volumes is not supported. Please choose a different volume for installation.
I know this topic has been discussed before but tbh I didn't understand a thing going through them lol. So I know there is this thing called iPartition but I currently don't want to spend any money on apps and am more than happy to reboot my entire Macbook or pick a different OS if that helps.