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Re: Installing the installer



Hi,

Fung4All wrote:
> > > refracta
> As far as I can tell it can make any installation into an iso and the iso
> can install whatever you configure the live into a partition. 

Sounds like a generator for Live-ISOs. One would have to try whether it
can carry the Debian installer software from an installation ISO.
Richard Owlett made clear that this software and its wider companions are
what he wants to boot.


> It does have a limitation as to the size of the system you are
> making a live, which I understand is an internal restriction of the 
> ISO9660 for what size can an iso be.

The maximum size for an ISO with block size 2048 is 2 exp (11 + 32) bytes
= 8 TiB. Due to a poor early decision in the APIs of libisofs and libburn,
xorriso can only make ISOs up to 4 TiB.

In practice the Debian installation ISOs for BD
  https://cdimage.debian.org/debian-cd/current/amd64/jigdo-bd/
with about 22 GiB are the biggest bootables i know of.
I know of users who wrote self-made ISOs with nearly 100 GiB to 3-layer BD-R.

Data files can have nearly the full possible size of the overall ISO in
theory. But the Linux kernel limits them to nearly 400 GiB and libisofs does
the same, deliberately. Both limits could be widened.
In xorriso's mkisofs emulation it is necessary to give option
  -iso-level 3
in order to enable data files larger than 4 GiB - 1. That's a mkisofs
tradtition.


Have a nice day :)

Thomas


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