ISO size breakdown? ISO diff?

[Carlo Vanini]

On Thu, Jan 21, 2010 at 9:28 AM, giovanni_re wrote:
> [...]
>> amedee at intrepid:~$ cd download/
>> amedee at intrepid:~/download$ wget
>> http://ftp.heanet.ie/pub/ubuntu-releases/karmic/ubuntu-9.10-desktop-i386.iso
>> http://ftp.heanet.ie/pub/ubuntu-releases/jaunty/ubuntu-9.04-desktop-i386.iso
>> --2010-01-20 13:42:17--
>> http://ftp.heanet.ie/pub/ubuntu-releases/karmic/ubuntu-9.10-desktop-i386.iso
>
> Er, no Amedee - not between #'d _versions_, but between, Ub & KUb ISOs for the _same_ version: ex, 9.10 U & KU ISOs.
>
> Basically, the only difference should be the GUI. What % of the ISO is the GUI? 5%? 10%? 20%
>
> Point: If a person already has one ISO, they should be able to just get the diff to the other, & that should (I'm guessing) be only about 10% of 700MB - a BIG savings in download MB, especially for slower net connections.
>
> [...]

if I got it right, what you describe is Debian's jigdo[1].
You may want to look at the FAQ[2] to better understand what it is, in
particular point 2.2 should be of interest.


[1] http://www.debian.org/CD/jigdo-cd/
[2] http://www.tldp.org/HOWTO/Debian-Jigdo/


--
Carlo