Re: How to Boot 2nd drive?

[nathan@visi.com (Nathan Mates)]

In article <550to1$sg5@news.emi.com>, Edhel Iaur <drsmooth@relex.com> wrote:
>shoppa@alph02.triumf.ca (Tim Shoppa) wrote:
>> Then you have to
>> modify the boot blocks of DOS 3.3 or ProDOS on your boot floppy so
>> that it will properly reference Drive 2 rather than drive 1.

>ProDOS will boot from drive 2 just fine (I tried it on my //c; I have
>a tiny machine language routine from _A+_ that invokes the "PR#7"
>disk code on the newer //c's)

   You said the magic words: 'Apple //c'. Only that machine has the
ability to make drive 2 look like drive 1 built in. The //e (which the
original question referred to) doesn't have such a thing; if you try
'PR#7' on that machine, it'll attempt to boot drive 1 of whatever's in
slot 7, not slot 6 D2.

   Standard duodisks on a //e can't swap drives without some hardware
trickery in the form of moving the drives around, swapping lines on
the cable, or mucking around with the EPROMs.

Nathan Mates

--
<*> Nathan Mates http://www.visi.com/~nathan/      <*>
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