Re: High and Double density floppies

[dgaxiola@mit.edu (David Gaxiola)]

In article <jolomoCLL3w2.67G@netcom.com> jolomo@netcom.com (Joe Morris) writes:
>Question: why can't disk][ drives format high density floppies at 140K?

>Any thoughts appreciated,
>Joe "Got a big box of High density 5.25 disks I can't use" Morris
>--
>        -joe        "Honey, they're in *everybody's* eggs" --firesigns


Don't disk ][ drives need hard sectored floppies?  There's a small hole to the 
right of the main hole in the center of the disk.  As you rotate the disk 
by hand you'll notice that there's a small puncture in the disk that 
you can see through every now and then.  Soft sectored floppies (I think) have 
this hole only once.  Hard sectored disks have this hole several times.  Older 
disks needed to see these holes many times to get in sync.  Newer, high 
density disks, only have a single hole and won't work with the old disk ][ 
drive.  Is this correct or is my memory bad?

--David Gaxiola

                        -----------------------
David Gaxiola                                     dgaxiola@athena.mit.edu
Massachusetts Institute of Technology
http:
//www.mit.edu:8001/afs/athena/user/d/g/dgaxiola/Public/WWW/dgaxiola.html