I used to use CSM mode because I didn't understand how UEFI worked, specifically the Boot Manager. My Boot Manager always ended up full of old entries of OSes

I used to use CSM mode because I didn't understand how UEFI worked, specifically the Boot Manager. My Boot Manager always ended up full of old entries of OSes that I had already deleted, and it caused some issues. This was not a problem in compatibility mode. But then I read an article [1] and learned how to manage the Boot Manager. Then I made a video [2] summarizing what I learned from the article. But to this day, I defend the point that UEFI is not a drop-in replacement for BIOS, because if you install and delete OSs frequently, you need to know how to manage the Boot Manager to avoid ending up with a mess. [1] https://www.happyassassin.net/posts/2014/01/25/uefi-boot-how-does-that-actually-work-then/ https://www.happyassassin.net/posts/2014/01/25/uefi-boot-how... [2] https://www.youtube.com/watch?v=-V3VhP-MUwE https://www.youtube.com/watch?v=-V3VhP-MUwE