Hello, Given the recent d-i RC announcemen snippet "use of unique filesystem identifiers and labels for more reliable booting." I suggest to use disk-by-id instead of disk-label, because they give even more reliable boots at high end machines with high end storages, as explained reasons on [0]. I hope this helps to improve d-i. Regards. Andre Felipe Machado
[0] http://www.techforce.com.br/news/linux_blog/debian_grub_fstab_multipath_initrd