Inode numbering
 

Why do inode numbers start from 1 and not 0

Its how they are structured along with the integrity of how hard drives are designed, file space, allocation and the way bits and bytes work into play.

Why would you need an inode to start with a 0? I'd suggest reading up on bits, bytes and such, probably make more sense to you then. You do realize any number that starts with a 0, you can just drop the 0 anyways.. 005 is still just 5... 01024 is still 1024... ;)