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Re: SCSI help please?
In article <Oct31.051825.90375@yuma.ACNS.ColoState.EDU> jr251693@LANCE.ColoState.Edu (James Darrel Riddle) writes:
>
> To clarify whats going on a bit here is more info.....
> The SCSI card ID # is 0 and the drive is ID # 7.
This is back-to-front from the normal convention (the computer is
normally set to ID 7, and the drive set to any lower number) but it
shouldn't matter, as long as they are set to different IDs.
> The drive won't spin up without a signal from the card and the
> card appears not to be sending it.
Pardon? A SCSI drive should "spin up" without the computer being
switched on at all! I am assuming that by "spin up" you mean that the
hard drive starts spinning, and not that it starts reading data.
> The drive is a Segate ST-4376N
376MB, but what form factor is '4'? I don't have any Seagate product
lists handy. [Minor interest only.]
> The terminator power is set to be supplied by the drive.
Correct. The Apple High-Speed SCSI card is terminated, and the drive
must be terminated (either internally, or via a piggy-back
terminator). The Apple SCSI cards do not supply terminator power, so
one of the drives should be set to do so.
> Parity is disabled.
Try enabling it. I don't know what the standard is, or what the Apple
card expects. All I know is that I've never had to set up a parity
enable/disable option on any SCSI hard drive I've used (including
smaller Seagate ones).
> And the drive is in a PC case with a PC power supply.
Probably irrelevant. As long as the correct voltages are being
supplied, and the power supply has sufficient current output, you can
use any power supply you like.
> My only guess is that my SCSI cable or card is bad but I'm trying to
> do everything out that I can so that I don't prematurely tell the person
> who sold me the card that its dead.
I suggest you try another SCSI drive with the same card and cable
before rendering your verdict. I suspect it is a simple configuration
problem.
> Can anyone tell me what the pin translation from the db25 to 50 pin is?
This is a standard cable, which you should be able to get from a
variety of sources. I recently bought one which cost me NZ$18 (about US$9).
[original message follows]
> I got a scsi drive today and hooked it up as directed but the
> utilities that came with the Apple High Speed SCSI card keeps
> telling me that there are no active drives on line. Also the drive
> won't "spin up" like its not being recognised. (sigh)
I'm still confused by exactly what you mean by "spinning up". If the
drive motor isn't activating, there is something wrong with the drive.
If you mean that the drive isn't being accessed by the computer (the
disk access light doesn't blink), then you probably have a SCSI ID
conflict, or you aren't waiting long enough.
Make sure the hard drive is switched on BEFORE the computer; let it get
up to speed (and go through any initial self-test it might be doing),
then turn on the computer. The computer should scan the SCSI bus,
trying each ID in turn and attempting to boot from the SCSI hard drive
with the highest ID.
If the drive access light blinks, but the computer refuses to boot
from the drive, it is probably because there is no software on it.
After you've attempted to boot from the drive, boot from the disk
supplied with the SCSI card, and use the HDSCPARTITION program to
partition the drive (if possible).
Note: don't turn off the computer or hard drive between the initial
boot attempt and booting from the floppy disk.
> With this arrangement either drive locks up running prodos 8 but will
> boot prodos 1.1.1. I find this rather odd.....
I don't understand. I thought you said the drive didn't work at all.
Which version of ProDOS-8 were you trying to use?
Do you mean that you were able to boot ProDOS 1.1.1 and the hard drive
was recognised, or you were able to install ProDOS 1.1.1 onto the hard
drive, or what?
--
David Empson
dempson@swell.actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand