Size of CD for use as a Rescue disk

People,

I had cause to need to find a recent RescueCD to work on old hardware 
with no USBs - I have usually used a Fedora LiveCD on a USB stick but it 
wasn't possible in this case - and I couldn't use a CD because the 
Fedora LiveCDs don't fit on standard CD disks anymore.  I ended up using 
an old 20GB HD and used virt-manager to install from a running laptop to 
the physical HD - then I could just plug that HD into one of the old IDE 
cables in the computers and get the hardware going that way.  However it 
was annoying - I would like a Fedora Rescue CD that will do everything 
that SystemRescueCd does:

   http://www.system-rescue-cd.org/Download

which is based on Gentoo and is only 480MB - when I build a base Fedora 
iso from the Kickstarter file it is over 800MB !

I wondered if it was actually possible to produce a Fedora rescue CD 
like SystemRescueCd - and so I started looking and found LFS.  Now I am 
wondering if I could "kill two birds with one stone" ie learn more about 
how Linux is installed onto a HD and then gradually develop that OS to 
the stage where I can continue to use DNF in the usual way?

Thanks,

Phil.
-- 
Philip Rhoades

PO Box 896
Cowra  NSW  2794
Australia
E-mail:  [email protected]
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