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From: anderson@mrcnext.cso.uiuc.edu (Brent James Anderson)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Adding a second internal floppy
Keywords: adding second internal floppy disk drive amiga 2000
Message-ID: <anderson.672366265@mrcnext>
Date: 23 Apr 91 00:24:25 GMT
References: <anderson.672316165@mrcnext>
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anderson@mrcnext.cso.uiuc.edu (Brent James Anderson) writes:

>I recently purchased an external Amiga 2.5" floppy drive real cheap used with hopes
>that I could easily plop it into the second 3.5" bay of my Amiga 2000...

[general discription of problem type stuff deleted]

>My question:

>Does anyone out there know exactly what it takes to make a newly installed (second)
>internal floppy disk drive happy to be there??? (Dave H. are you there :)

>-Beej

My answer:

Thanks to the numerous responses I received via E*Mail I now have a second internal
floppy drive that I scavenged from a cheap used external floppy.   Below I describe
the necessary steps to alert your Ami to the changes you've made.  Save this in
your notes file or wherever.  Those of you that already knew... shame on you
for not speaking up! :)

1) I opted to change the original internal 3.5" floppy drive to df1: since the 
jumpers to do so were easily located on the back of the drive.  The newly inserted
drive to not have the same set of jumpers so readily apparent.
With your Ami open, lean over the front of her, put your forhead on the power
supply cage and your mouth will hang over the drives... move the jumper on the
back of the existing drive one pin to your right like so:

Original          New
._. .             . ._.
. . .             . . .

This will make the original internal think that it is now df1:

2) There is a jumper just beneath the ribbon cable (for the floppy drives) just
as the ribbon comes out of the motherboard.  You must dig up your own jumper and
slide it down over the two "pins" here (this is jumper J301 next to connector
CN 303 as shown on page F-12 of the Amiga 2000 Schematics in the "Introduction
to the Commodore Amiga 2000" book that everyone gets with their Ami).

That's it.  Now I just have to figure one last 'problem' out:

Whenever one drive is accessed, both drive lights come on.  The one actually being
accessed flashes on and off as normal but the second stays continually lit until
the one actually being accessed is completely finished.  I will try swaping the
ribbon cable headers first and will followup as soon as I find the solution (or
the lack thereof :)

Thanks everyone, Amiga Land is great :)

-Beej