Re: [gentoo-catalyst] Initrd overlay for gentoo.igz

[Georg Lippold]

Hi Eliot,

just use

livecd/root_overlay: /path

in your livecd-stage2.spec

In /path, there is this structure

 > find . -print
 >
 > ./etc
 > ./etc/init.d
 > ./etc/init.d/somescript

The whole gentoo.igz is just the kernel ramdisk, that is discarded after 
the filesystem from the CD is mounted. Your other modified files can go 
into that directory, too. They are copied over stage2 before it gets 
compressed.

Greetings,

Georg

Eliot Gable wrote:
> I am new to the whole "live cd" thing, so please bear with me here.
>
> I am trying to add a file to the /etc/init.d/ directory that exists *after*
> the entire Gentoo live cd boots up. I have figured out that the /etc/init.d
> directory in the ISO image on the CD is a base environment of some sorts,
> and that the gentoo.igz file in the isolinux directory on the CD contains
> the real set of files that exist in the /etc/init.d directory once the
> entire CD finishes booting. I have created a folder to hold my overlay
> files. This folder looks like so:
>
>
> Now, I try to create an overlay like so:
>
> find . -print | cpio --quiet -o -H newc | gzip -9 > ../gentoo.igz.new
> cd ..
> cat gentoo.igz.old gentoo.igz.new > gentoo.igz
> cp gentoo.igz newcd/isolinux/
> cd newcd
> mkisofs -o ../gentoo.iso -b isolinux/isolinux.bin -c isolinux/boot.cat
> -no-emul-boot -boot-load-size 4 -iso-level 2 -boot-info-table .
> cdrecord -blank=fast dev=/dev/hdc ../gentoo.iso
>
> The thing is, the resultant CD will boot just fine. However, the file does
> not show up in the /etc/init.d/ directory after the CD finishes booting. I'm
> trying to do this without having to build an entirely new live cd using the
> catalyst utilities. All I want to do is add a single file (maybe two) to the
> /etc/init.d directory, and maybe modify one of the existing files.
>
> Any help on this would be greatly appreciated.
>
> -Eliot Gable
>
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