Switching from a MacBook Pro to an iMac as the main control centre of 
my Mac network, I copied three folders of my web-sites from the 80 Gb 
hard disc of the MacBook Pro to the 160 Gb hard disc of the iMac: 

- in two cases, the size in bytes is shown as the same in both places, 
but the number of Gb is shown as less on the larger hard-disc, more on 
the smaller hard-disc:

Under system 7-8-9 it used to be because the larger hard disc has 
different-sized containers (cells? what are they called?) to put the 
stuff into so the total is actually a bit smaller: is it the same 
today, or is it a difference in the way of calculating between bytes 
and Gb? And is this the same as the thing which means you think you 
have a 160 Gb hard disc but its capacity is only shown as 149 Gb?

- the amount of difference is also different, and not in relation to 
the total size:

1.11 and 1.12 Gb
1.91 and 1.97 Gb
3.24 and 3.29 Gb

- looks like 0.9%, 3%, 1.5%

- in the third case even the numbers of *bytes* differ, though only by 
2,000 which I suppose is only ±2Kb so not significant, but odd anyway.

David
_____________

David Kettlewell
weaver of harmonic web-sites
<http://web-weaver.new-renaissance.com>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Musica Humana - 
Music and Musicology 
to educate the whole person
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<http://www.new-renaissance.net>
Skype internet-telephone and .Mac: david_the_harper

David
_____________

David Kettlewell
weaver of harmonic web-sites
<http://web-weaver.new-renaissance.com>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Musica Humana - 
Music and Musicology 
to educate the whole person
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<http://www.new-renaissance.net>
Skype internet-telephone and .Mac: david_the_harper