Well - i did it - i think a hundred times today.
Partitionating - FAT 32MB
EXT3 2048MB
FAT 1700MB

Then , unmount, restart VM, Remount, Copying the ROOTFS, NO ERRORS untill now, then Inserting into the Device, and then it boots, but still gives the Lines:
untracked 819 lines ... with various other lines as well.
i think i´ll try another machine if i am later at Home again.