Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!usc!samsung!noose.ecn.purdue.edu!mentor.cc.purdue.edu!purdue!haven!mimsy!mojo!disney!news From: josip@src.umd.edu (Josip Loncaric) Newsgroups: comp.sys.mac.hardware Subject: Re: Can Mac II have two internal hard drives? Message-ID: <1991Mar16.145908.22196@ra.src.umd.edu> Date: 16 Mar 91 14:59:08 GMT Sender: news@ra.src.umd.edu (The News System) Distribution: na Organization: Systems Research Center, University of Maryland, College Park Lines: 35 Thanks to all who have replied. The answer is YES, it can. I have a Quantum 105 and an Seagate 40 spinning away in my Mac II as I write this. What do you have to do? Well, first I had to decide where should the drives go. They are both 1/2 height 3.5" units, and could (in principle) fit in the rear of the disk shelf, but since I did not have an appropriate bracket, I installed the second drive where second floppy (which I do not have) would go. Second, I had to make a flat ribbon cable, 2' long, with a connector at each end and a connector in the middle. The middle one connects to the Mac, ends hook up to hard drives. I left termination resistors in place on both drives. Third, power had to be routed to both drives (take two power connectors, and solder them into a "Y" configuration). Finally, it turned out that Apple HD SC Setup program could format my Quantum 105 only as an 80Mb unit, so I used the software which came with the drive. In the end, everything worked. A disclaimer is in order: there are many ways in which an inexperienced person could mess this up, so I cannot take any responsibility. Also, power consumption of my drives is reasonable, so I'm not exceeding power supply specs, your situation may be different. -- Josip Loncaric / SRC / U. of Maryland / -------------------------------------------------------------- ! Today's Special: Opinions....$0.02 each ! --------------------------------------------------------------