System optimizations?

[hifix]

I've had a look and cannot find:
/boot
/lib
etc.

This is the directory for a 3.81 install.
Are the tweaks for V4 and beyond ?

This is what you see when you put the µSD card into a card reader and into your computer.
But that won't show you the complete directory structure.
In fact you need to log in with SSH and there you'll find the boot folder, the lib folder and many many more...

Johan

Thanks Johan!
I'll be giving it another go.