New project

While I'm waiting for an inspiration to make games, I'm now working on a little hobby project (actually two, the latter being that I repair my old PSX, but it's a matter of soldering four CD lens control pins). The hobby project has two stages:
1.- Identifying the offsets of recognized saveram headers in a huge 40 Gig image I ripped out of the PS2 HDD with linux
2.- Extract those files by using the recognized headers file size information

It should be fairly easy, but since I'm without a clue as to what I'm looking for, I'm sorta rahashing my C coding expertise here.

One very cool thing about this project is that the code is gonna be completely portable (only using stdio.h) so anyone wanting to get it later for any platform can.

it's so easy, I'm getting all gitty about it.