23 Apr
2013
23 Apr
'13
10:22 p.m.
On Wed, 24 Apr 2013, Terry Stewart wrote:
On Wed, Apr 24, 2013 at 3:55 PM, Tothwolf <tothwolf
at concentric.net> wrote:
Is this reliable in the long-term though? If you then read/write a 360K
disk in a true 360K drive that was written to in a 1.2MB drive, won't you
have odd issues with the track widths? What I seem to remember from years
ago was a 1.2MB drive could not reliably overwrite data on a 360K disk
because the tracks written by a 1.2MB drive were narrower, so when you
would then work with that disk in a 360K drive, the 360K drive would pick
up data from the original wider 360K drive track and the narrower 1.2MB
drive track. Maybe this would work ok to a limited degree with a 360K
floppy that had been bulk-erased prior to writing in a 1.2MB drive, which
was then never written to again in a 1.2MB drive after being written to in
a 360K drive?
Is it even possible to write reliable 360K disk
using a 1.2MB drive? It
had been ages since I worked with some of these drives since a lot of my
stuff is packed away, but I seem to remember that I always had to use a
360K drive when /writing/ 360K disks, while I could still read 360K disks
in a 1.2MB drive just fine. (The tracks written by a 1.2MB drive are
narrower than those written by a 360K drive?)
Yes, it's possible to write a 360k disk in a 1.2MB drive. See
http://www.classic-computers.org.nz/blog/2010-02-18-writing-cpm-from-1.2mb-…