Hmm, I even tried the ext3 format with same results.
You shouldn´t be required to add that ext3.ko module if I´m not mistaken.

Now for the N800 we don´t have the /etc/init.d/minircS file that are mentioned to include the
insmod /mnt/initfs/lib/modules/current/ext2.ko
to be executed at startup.

I found a "similar" file: 'rcS' in that directory. Is that the correct one? Doesn´t seem to "do it" for me, anyways...

My purpose is to create a complete mirror installation/backup using bootmenu to choose and ultimately do the flashing of e.g. new OS versions etc. I´m a windows guy, but do have some unix experience at work.