Subject: Re: connecting a scsi device to an SE/30
To: None <port-mac68k@netbsd.org>
From: None <squeegy-macbsd@squeegy.org>
List: port-mac68k
Date: 10/09/1999 22:23:29
It hangs on booting the mac os. I have the scsi device terminated. it is
set to scsi id 3. the internal should be scsi id 0 correct? is there a way
to check this? I can choose another scsi id and try that. also someone
mentioned trying reformatting with the Apple HD utility. I guess I will
try that as well. I hope the cable isn't bad, I can't afford to replace it.
>
> If you mean that it hangs with a grey screen at power on or something
> similar, it's probably a termination problem. Some machines are more
> sensitive to termination problems than others. Not sure why... maybe the
> trace length on the motherboard or some difference in the electrical
> stability of some component or... who knows. Anyway, check the
> termination.
>
> I've also seen this sort of problem if a SCSI cable is just plain bad. It
> will work under certain circumstances, giving mostly successful results on
> one machine, although usually with random crashes under MacOS) and not
> being able to boot with it attached to another machine. Thus, you should
> also consider replacing the cable and see if that helps.
>
> Finally, that symptom can be caused by two SCSI drives having the same
> SCSI ID. In some cases, a machine will boot and ignore one of the drives.
> The MESH controller used on PCI PowerMacs is a good example of this. Not
> sure how that works, but it appears to.... However, other SCSI hardware
> will just plain refuse to deal with a bus with an ID conflict. And, of
> course, if you were moving this drive from one machine to another, it's
> quite possible (likely, even) that you'd have another device at a given ID
> on one machine and not on the other.... :-)
>
> Hope that helps.
>
>
> Later,
> David
>
>
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Jt "The Squeegy" Chiodi
http://www.squeegy.org/
squeegy@squeegy.org