On Ultra1 with Splack8: poweroff after halt and wide scsi disk with adapter keeps wide

On my Ultraparc 1 I have installed Splack 8 succesfully. There are two minor problems:
1. after `halt\' it returns to openboot i.s.o. switching off the computer. On my Sparcstation 5 it works fine. Do I have to change something in openboot?
2. I have got an extra hard disk of Western Digital with 68 pins wide scsi connector. Via an adapter I reduced it downto 50 pins. In /proc/scsi/esp/0. it says it is wide, but the connector is narrow. What has to be changed in the driver drivers/scsi/esp.c ?

Thanks in advance,

John