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From: jimb@amdcad.UUCP (Jim Budler)
Newsgroups: net.micro.mac
Subject: Re: Magic location in mac+ selects boot sequence
Message-ID: <10689@amdcad.UUCP>
Date: Sat, 15-Mar-86 14:12:24 EST
Article-I.D.: amdcad.10689
Posted: Sat Mar 15 14:12:24 1986
Date-Received: Sun, 16-Mar-86 09:27:46 EST
References: <1416@utai.UUCP>
Reply-To: jimb@amdcad.UUCP (Jim Budler)
Distribution: net
Organization: AMD, Sunnyvale, California
Lines: 28

In article <1416@utai.UUCP> dudek@utai.UUCP (Gregory Dudek) writes:
>
>
>   I finally turned the Mac off & removed the battery.  After leaving it
>off for a while (20 min. or so, a short off period of 2 min. had NO EFFECT!)
>and unplugging it, it rebotted correctly from the floppy and I
>could fix up the HD20.
>
>   It seems to me like there was something in non-volatile RAM that
>told it to look to the HD20 port BEFORE the diskette port!  Is there such
>a bit? Any other explanations?  Is there any way to get the Finder/System
>to check out the HD20 port if it "wasn't there" when you powered on?
>This sort of problem could be a real headache, rendering an HD20
>unusable, if one didn't think of removing the battery.
>  By the way, as noted, I've got a Mac+ with Finder 5.1 & the "new" system
>(3.0?).
>

A while ago a program called PRAM came across the net which both explains this
behavior and allows you to fix it. PRAM can examine and change Parameter RAM
values. And yes it shows one for boot drive, Internal/External.
-- 
 Jim Budler
 Advanced Micro Devices, Inc.
 (408) 749-5806
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