Re: WinMac Digest #224 - 02/11/99 -- [WinMac] SCSI Voodoo
John W. McCarthy(jwmcmac[at]flash.net)
Fri, 12 Feb 1999 03:33:45 -0600
I don't recall seeing anything that says SCSI devices have to be
numbered in the same order that they appear in the chain, only that they
are limited to seven devices (under standard setups and usages) and the
devices must all have a distinct number (not repeated elsewhere in the chain).
However, . . .
My own limited experience with SCSI has been that it seems to matter if
your external devices are numbered in the same sequential order in which
they lie along the chain.
It seems that I especially had trouble with the 1Gig Iomega Jaz external
drive until the SCSI numbers matched the position of each device in the
chain. I believe Apple's drivers are great for SCSI, but Iomega's
drivers are pretty fickle (the latest MacIo10a driver not being too bad
though). When having problems, things always went better when the Jaz
drive was off or disconnected. It works okay now.
I have followed suggested procedure by installing the Epson Scanner as
the last device on the chain and switching on its' termination. And I
think the Jaz is the first thing on that set up now (also terminated).
Since ordering the devices and their numbers the same order as their
order in the chain (but not necessarily the same number as their
location), I have only had to terminate the first and last device in the
external chain and have had no more problems.
Prior to this, I had to frequently do disk repairs, trash finder
preferences, zap pram, etc . . . in order to get things running again
till the next time.
Until I did this ordering, I had to use multiple terminators along the
way to get devices to appear/work. Everything was come and go.
Since there is no scientific basis for all that I just said, I suppose
this is why it is called VooDoo SCSI.
And BTW, that goat thing was funnnnnnnny!
Thanks Dan.
GODBlessUsAll.
Pat Kelly McCarthy
>
> Subject:
> Re: [WinMac] SCSI Voodoo
> Date:
> Thu, 11 Feb 1999 11:42:28 -0700
> From:
> Bruce Johnson <johnson@Pharmacy.Arizona.EDU>
>
>
>
> HA!! Having spent all weekend doing the SCSI voodoo dance, adding an
> external CD-R to my Mac, losing a disk partition, then eventually, the
> whole disk in the process, all I can say is D***! I forgot the $@%#@!#!
> goat! I KNEW a chicken wasn't big enough!
>
> ...and they lie...I didn't get my chain (internal CD, 2 HDD, external
> Syquest and CDR) working until 4 of the 5 devices were terminated...but
> it may have certainly been that goat issue.
>
* Windows-MacOS Cooperation List *
* FAQ: <http://www.darryl.com/winmacfaq/> *
* Archives: <http://www.darryl.com/winmac/> *
* Subscribe: <mailto:winmac-on@xerxes.frit.utexas.edu> *
* Subscribe Digest: <mailto:winmac-digest@xerxes.frit.utexas.edu> *
* Unsubscribe: <mailto:winmac-off@xerxes.frit.utexas.edu> *
This archive was generated by hypermail 2.0b2
on Fri Feb 12 1999 - 01:36:19 PST
|