I have, as you all
know, a beige G3 Tower. This case has one internal Harddrive bay for a
3.5" drive and 4 external drive bays for 5.25" drives or smaller.
In all configurations there is a Floppy Drive and a CD-ROM drive, which
occupy the two upper slots. In some configurations there is also a Zip
drive in the 3rd bay, leaving only one slots free. (The AV models for
I got a CDR/RW drive recently, filling my Mac completely - or so I thought.
After I got another harddrive from where I work during the weekends (a
9GB SCSI 3 IBM DNES), I found myself with one drive more than my Mac could
accept. Of course, I could have bought an external case for the burner,
but that would have cost me several dozen franks (sFr.)
Soon I noticed that
the Zip drive and the harddrive seemed to be short enough to fit into
one slot together.
Read on how I did what is usually said to be impossible. (According to
Mac users on GameRanger)
a drive to a full beige MT
As you can see on the pictures above, the Zip drive and the harddrive
are fixated by four metal strips, two to the left and two to the right.
The strips can actually also be made of plastic or even wood, that really
doesn't matter. What counts is that they are strong enough to hold the
harddrive in its place. You'll also need 8 screws that fit each drive,
in my case that were 4 M2 and 3 M3 screws. Those can be found in every
hardware store or do-it-yourself center. The strips need to be cut out
with a jigsaw for example, you have to measure the length of them yourself,
that really depends on what drives you want to pack together. The holes
in the stripes are preferably a little bigger than the screws, allowing
for more adjustability.
you should see to it that the drives match in the back, so you don't have
trouble connecting the power and SCSI or ATA cables to it (can be tight).
Then, you'll need a new SCSI ribbon cable, because
the original device cable only supports 3 devices (Mac, Zip, and spare).
I took a 5 device cable from an old, disabled Quadra 840av (that's the
same as in all the small cases (Quadra up to 8500). This cable is, as
you can see on the pict, rather short, making me
sweat a little when installing it:) I needed to rip off the third connector
and press it back on a few inches nearer to the middle, so I could fit
it in the burner. Of course you can also take the original cable and press
another SCSI connector to it, I guess that part can be bought in places
like RadioShack, Fry's etc, otherwise you can rip one out of an other
cable. Once the new ribbon cable is installed and all drives are connected,
you might run into trouble with power supply. In case one of your drives
is a Zip, you won't have trouble (it has a special connector), in case
it is something else, you might need to clip another powerplug to one
of the powercords.
(check the coding!)
Once you have power and SCSI
connected to all the drives, you can close the Mac back up and see if
it works. Remember to install the pack first, since it is the highest
unit of all drives. The metal sledge of the upper bays reaches down a
little further than it should, so you have
to slide it in afterwards.
As far as I know the
only issues that might arise are overheating of drives in case you pack
two harddrives together, which is something I do not recommend,
the other one is a hear-say that Zip drives may write erratic stuff onto
you disks due to interference caused by a harddrive (magnetic fields?).
Everything else shouldn't cause a lot of trouble, but as always:
changes and tinkerings you do are on your own risk, I will not
take any responsibility for any damage caused to your system, drives or
performance. If you have questions about a certain task, feel free to
Text: © by Bensch Blaser, Apr. 2000, all trademarks
are property of their respective owners.
Pictures: © by Bensch Blaser, Apr. 2000