@tazpider
Oh, yes, I forgot:
You boot from a CD. The filesystem, your filesystem, is in RAM. You change now this and that - anyway, the directory ,,/media/cdrom" is empty, a virtual something.
So copy the content of your CD (the fresh, untamed content) just into /media/cdrom. Then use ,,tazlito writeiso".
By the way: if you boot from a ,,frugal hdd" install this error message will not appear. How to do it? One example from my machine:
Make on some ext3-partition a directory ,,boot.slitaz". Copy the whole cd just into this directory. Then adjust the grub legacy command line accordingly:
title slitaz 2.0 hda3 frugal
root (hd1,2)
kernel /boot.slitaz/bzImage root=/dev/ram0 rw
initrd /boot.slitaz/rootfs.gz
boot
That's it. Now you boot, change this and that and use ,,tazlito writiso". Then you will recognize something new:
/home/slitaz/distro/rootcd/boot/rootfs.gz
=> This rootfs.gz is a new (!) one and it is bigger than your original rootfs.gz.
Now you rename your original one, like ,,rootfs.0.gz" and now you copy the new one to
/boot.slitaz/ - with this style you always have 2 rootfs-files: the original, untamed one and the new one, that you have changed. This new one is not compressed, though, quite bigger than the original 35 MB something.