[comp.sys.mac] Strange Plus/HD problem;Experts?

alex@grian.cps.altadena.ca.us (Alex Pournelle) (06/28/90)

hale@hpfcdj.HP.COM (Bill Hale) writes:


>	Here's a Plus/HD problem that has stumped all the local MacExperts...

>	I removed a factory supplied 20mb Miniscribe 8425-S HD from an SE
>	to update with an SC-40. The SE continued to work flawlessly.

>	The result is that the Plus recognizes the HD on the correct
>	select code; I can move files all over the place with no errors; 
>        but I *can't* get the Plus to boot from this disc. (I get the "?"
>        icon).

It's the old Unit Attention problem, alright.  Need to cut one wire of
the interface so's it'll work--don't rightly remember which one, though
any local Mac dealer should get it out of Apple Dealer TS if
he/she/it/yx tries a bit.

This is exacerbated by the truly horrid SCSI implementation of both the
drive and the Plus--both of which I use regularly, but have big
problems.

Hope that helps--if not, gimme a call 'n' I'll see if I can dig it up.

	Alex
-- 
		Alex Pournelle, freelance thinker
		Also: Workman & Associates, Data recovery for PCs, Macs, others
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etxtorn@juno11.ericsson.se (Thomas Tornblom TM/JU 99367) (06/29/90)

In article <1990Jun28.020110.5970@grian.cps.altadena.ca.us> alex@grian.cps.altadena.ca.us (Alex Pournelle) writes:
>hale@hpfcdj.HP.COM (Bill Hale) writes:
>
>
>>	Here's a Plus/HD problem that has stumped all the local MacExperts...
>
>>	I removed a factory supplied 20mb Miniscribe 8425-S HD from an SE
>>	to update with an SC-40. The SE continued to work flawlessly.
>
>>	The result is that the Plus recognizes the HD on the correct
>>	select code; I can move files all over the place with no errors; 
>>        but I *can't* get the Plus to boot from this disc. (I get the "?"
>>        icon).
>
>It's the old Unit Attention problem, alright.  Need to cut one wire of
>the interface so's it'll work--don't rightly remember which one, though
>any local Mac dealer should get it out of Apple Dealer TS if
>he/she/it/yx tries a bit.
>
>This is exacerbated by the truly horrid SCSI implementation of both the
>drive and the Plus--both of which I use regularly, but have big
>problems.
>

Or you might want to change to the platinum ROMs (Loud Harmonica?) and get
rid of those problems once and for all.

Thomas