From: David Masover <ninja@...>
Date: 2010-07-25T06:42:45+09:00
Subject: Re: Editing a FAT/FAT32 Partition Table

On Tuesday, July 20, 2010 01:26:28 pm Joseph E. Savard wrote:
> Not sure I can committ to Ruby being limited in this area.  Just know how
> to do it in C/c++ from my experience..
> 
> Take a look here http://ruby-doc.org/core/classes/IO.html.  Does not seem
> to hit the "DIRECTORY" (FAT) structure...

Doesn't seem like it could, really. I don't know of any filesystem API which 
would make this clean.

One possible hack would be to move the files all to a temporary directory on 
the same device, then move them back, one at a time, syncing after each move. 
That might force the directory order, but it might wear your SD card a bit, 
and I don't know enough about FAT to know whether it'd do what you're asking.

If that doesn't work, you're going to need some sort of low-level access 
(/dev/whatever on Unix) and a lot of binary manipulation (or a library). I 
don't know that there's anything for Ruby -- maybe this in JRuby:

http://code.google.com/p/fat32-lib/