Very Computer

1. Target Bus Phase sequence error on arad with SCO 5.0.4 aha-2742W

I am setting up a HP Netserver LM Pentium 100
Server with an Adaptec AHA-2742w single ended EISA-to-fast, wide
SCSI adapter which has a narrow and wide connector internally.
The hard drive is on the wide and the cdrom is on the narrow cable.
It has 48MB Ram and is running SCO 5.0.4 enterprise openserver.
The installation cd-rom is a narrow (on the 50 pin cable) toshiba drive.
The installation Hard disk is a brand new quantum ultra scsi3 wide
on the 68 pin connector of the same controller.
While installing 5.0.4 I get this message:
Warning arad: adapter 0 Error: Target Bus Phase sequence error (ha=0
bus=0 id 0 lun 0)
And also this error:
Selection timeout (ha=0 bus=0 id=5 lun=0)
Id 5 is the scsi cdrom
Id 0 is the hard drive
It gives a lot of these on the screen and then gives a retry option
on the screen. I try retry and it will finish the install. It even seems
to work. Any sugestions?
Thanks in advance, Daryl
p.s. there is also a built-into-the-mother-board dual port narrow scsi
which is disabled.

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