HP 64000 hard disk structure ???

Hello ! i'm trying to decode the disc structure of a HP7912 hard disk attached to a HP 64000 uC System. build in 1985! yeaaah I managed to copy the HP7912 sectors on a MO-disc SCSI on series hp 9000 / 300. i read in the MO disc image on a PC. now i have a 54MB image file. has anybody some infos about structure and tables of the directory of the HP64000 disc format ?? it's not HFS (HPUX) and NOT LIF.... i decoded the directory entries for name and date and size of file. now there are two 16bit words describing first and last page used for storing data. i have no idea how this 16bit value is belonging to a sector number. any hints ?? thanks peter -- DEMUS DATENSYSTEME GmbH ? Steinbergstr. 24 D-30559 Hannover ? Germany Tel +49-511-95448-0 ? Fax +49-511-95448-44 http://www.demus.de ? mailto:info@demus.de