iachetta@ec.ecn.purdue.edu (Richard N Iachetta) (04/28/91)
What are the best kind of disks to use with a 1571 in 128 mode, double sided single density or double sided double density? I am having problems formatting and using some brand new double density disks, and I am thinking that maybe I need single density. I know with IBM's you will have trouble if you double density when you should have used single and vise-versa, and I assume it is the same for the Commodore, but there is no mention of which type to use in the 1571 User Guide. Thanks. Rich iachetta@ecn.purdue.edu
rknop@nntp-server.caltech.edu (Robert Andrew Knop) (04/28/91)
iachetta@ec.ecn.purdue.edu (Richard N Iachetta) writes: >What are the best kind of disks to use with a 1571 in 128 mode, double sided >single density or double sided double density? Basically all of the 5.25" disks I use in my 1571 are double density; double density should work just fine. What does NOT work, in my experience, is HIGH density disks. These are higher density than double density, and I don't think the two are compatible. -Rob Knop rknop@tybalt.caltech.edu
desimone@cse.uta.edu (David Desimone) (05/01/91)
In article <1991Apr28.082406.5055@nntp-server.caltech.edu> rknop@nntp-server.caltech.edu (Robert Andrew Knop) writes: >Basically all of the 5.25" disks I use in my 1571 are double density; double >density should work just fine. What does NOT work, in my experience, is >HIGH density disks. These are higher density than double density, and I don't >think the two are compatible. That's right, a high-density (or quad density) disk requires the disk circuitry to switch to a much stronger write signal, and the 1571 hardware can't generate enough magnetic field to write to one of these disks. Interestingly, the SFD1001, a high-density drive, has this exact same problem, so that you must use double-density disks with it, even though it uses more density than that. With this drive I recommended that you get GOOD QUALITY double-density disks. I have not had a problem, except when I tried to format a high density disk in the SFD. :) -- David DeSimone, aka "Fuzzy Fox" on some networks. /!/! INET: an207@cleveland.freenet.edu / .. Q-Link: Fuzzy Fox / --* Quote: "Foxes are people too! And vice versa." / ---