From: Gary Hasson <gary@...>
Date: 2009-12-01T02:16:15+09:00
Subject: Re: Ruby byte access to disk sectors like dd does

My reasons for wanting to use Ruby in place of dd is that I wanted to be 
able to do whatever I wanted to the hard drive from a wxRuby GUI. I have 
several Bash scripts that do things that I would prefer to use a GUI 
for. Plus, I wanted to see just how well Ruby could do low-level tasks.

I used sysread and syswrite because, as the manual states: "syswrite is 
a low-level, unbuffered, nontranscoding version of write". If I am going 
to modify the partition table on the hard drive, I want to be sure that 
reads and writes are doing what I tell them to do.

As for writing only one byte in my example, it was simply a test 
example. If I could correctly write one byte to the unpartitioned area 
of my hard drive, then I knew that Ruby could do what I wanted.

Gary
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