[comp.sys.atari.st] 2ND DRIVE FOR MEGAFILE 44

AKISUJAR@NUSVM.BITNET ("S. Sujarittanonta") (05/05/90)

Hello from Singapore,

I just collected a CONNER CP3500F, 200MB hard disk and tried to install it
inside the MegaFile 44 box. My intention is to use the Conner ddrive as the
main Hard disk and change the re-connect the Syquest drive as 2nd drive so
that I can use Syquest for backing up the data from the 200MB. However, I ran
into 2 problems as follow:

1. Atari uses Hard disk with SCSI parity disable but the Conner 200MB drive
   is factory set with SCSI parity enable. The Conner 100MB has a jumper(E4)
   which can be installed to disable SCSI parity. The Conner 200MB PC board
   I found the solder points mark E4 but no pins installed for the jumper.
   My question is: Is it save to install the pins and use jumper on this drive?

2. Another problem is: The Mega file 44 has an extra 50 pin connector probably
   for another SCSI drive on the host adapter board, extra power supply plug as
   well as a bracket which pre drilled holes which perfectly match teh mounting
   holes on my Conner hard disk. However, when I connect additional hard disk
   I can't set the SCSI ID of the new drive. Apparently the SCSI ID is to be
    set by the dip switch on host adapter card.The syquest is set at SCSI 0
    from factory and when I try changing Syquest HD to SCSI 1 the hard disk is
    no longer recognise by the computer.

I  came across a message here few months ago that one of the 'GURU' in Germany
had succesfully installed 2nd Hard disk to his MegaFile 44. I shall be most
appreciative if any kind soul Guru will help me on the above problems.

Suthipuntha     School of Architecture, National University of Singapore
                AKISUJAR@NUSVM.BITNET

csbrod@medusa.informatik.uni-erlangen.de (Claus Brod ) (05/07/90)

AKISUJAR@NUSVM.BITNET ("S. Sujarittanonta") writes:

>2. Another problem is: The Mega file 44 has an extra 50 pin connector probably
>   for another SCSI drive on the host adapter board, extra power supply plug as
>   well as a bracket which pre drilled holes which perfectly match teh mounting
>   holes on my Conner hard disk. However, when I connect additional hard disk
>   I can't set the SCSI ID of the new drive. Apparently the SCSI ID is to be
>    set by the dip switch on host adapter card.The syquest is set at SCSI 0
>    from factory and when I try changing Syquest HD to SCSI 1 the hard disk is
>    no longer recognise by the computer.

Both SCSI drives in a Megafile 44 have to be selected as SCSI drives 0. The
Conner drive must plug into the first SCSI connector (J2, as far as I remember)
and the Syquest drive into the second one. Moreover, you'll have to flip
DIP switch 1 so that the ATARI hostadapter knows that you're trying to
install a second drive.

Hope this helps,

Claus Brod