there is a myth that the first partition must be 2gb or lower
but it is not true at all...it's true for all filesystems except PFS3 DS
if you config the hardisk to use PFS3 DS (direct scsi) you can setup for example a 160gb hardisk as only boot partition
sincerely I don't know which is the limit of PFS3 ds but 160gb as boot partition works perfect
you do not need scsi v43 or v44 ...works perfect with scsi.device v39 or v40 in rom...there is no need to install new scsi.devices or reboots
EDIT:to make this works correctly ...first you must load resident scsi.device v43 and make all the hardisk setup....otherwise HDtoolbox will not recognize the drive correctly...hardisk size,numbers of cylinders ect