Xref: utzoo comp.sys.mac:22635 comp.sys.mac.programmer:3090 Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!rutgers!netnews.upenn.edu!eniac.seas.upenn.edu!hodas From: hodas@eniac.seas.upenn.edu (Josh Hodas) Newsgroups: comp.sys.mac,comp.sys.mac.programmer Subject: Re: 800K external drive moved inside Mac II Message-ID: <6092@netnews.upenn.edu> Date: 9 Nov 88 13:39:41 GMT References: <1030@osupyr.mast.ohio-state.edu> Sender: news@netnews.upenn.edu Reply-To: hodas@eniac.seas.upenn.edu.UUCP (Josh Hodas) Organization: University of Pennsylvania Lines: 57 In article <1030@osupyr.mast.ohio-state.edu> pgn@osupyr.mast.ohio-state.edu (Paul G. Nevai) writes: > > >This is what I did: > >I took apart my 800K drive, took out the drive unit itself, went to my dealer >(MicroCenter in Columbus, OH), purchased a Mac II metal case for the drive and a >ribbon cable (total = $11.50), then put my drive into it and then put the whole >thing in my Mac II. > >It's simple. Now I have a 2nd external drive for my Mac II for $11.50. BUT IT >DOESN'T WORK!!!! How come? It wants to initialize every disk and then fails to do >do so!!! > >(When I took the inverse of all operations and transformed it back to a 800K >external drive for the Mac Plus, it worked again.) > >Advice from anyone? > >P.S. I know you smart Apple guys read this, please respond. I promise I won't >make it public if it's confidential. On the other hand if it's not, then I'll >let everyone know how to save a couple of hundreds of bucks. > >Paul Nevai pgn@osupyr.mast.ohio-state.edu >Department of Mathematics TS1171@ohstvma.BITNET >The Ohio State University 73057,172.Compu$erve >Columbus, OH 43210 1-(614)-292-5310.office >U.S.A. 1-(614)-292-4975.secy Well, the problem may be that some time before the SE and II came out they changed subtly the design of the drive. I know this happened because I went to get an accelarated 512e fixed and they said that they could not swap the drive because the new drives required a new cable (different than the old pinout) and that they did not have that cable in a sufficiently long form to get around my accelarator (A custom long drive cable of the old style had come with the card). So if your drive is one of the older ones, and you are using a cable for the II (which is designed for the new drives) the pinouts are wrong. I know new drives will work in old systems given the proper cable. I have no idea whether old drives can be made to work in newer systems. If you get an answer I'd love to hear as I have been considering the same process to give my II a new floppy. Josh ------------------------- Josh Hodas (hodas@eniac.seas.upenn.edu) 4223 Pine Street Philadelphia, PA 19104 (215) 222-7112 (home) (215) 898-5423 (school office)