🚀 go-pugleaf

>>     a 360K disc formatted in a 1.2M drive (with the /4 option to format as
>>        a 360K disc, of course) canNOT be read in about 1/3 of the 360K 
>>        drives when a 1.2M drive also writes the data to the disc, but
>>     a 360K disc formatted in a 360K drive and written to by a 1.2M drive
>>        can NEARLY always be read in a 360K drive.

> I would disagree with the above entirely. The above rules are either
> accidentally reversed or a recipe for disaster.  Disks made on 360k
> drives should NEVER be written to with a 1.2 Meg drive if you want
> to subsequently be able to read them on a 360K drive again (unless you
> bulk erase and start all over again).

In a previous job, I frequently had to transfer files between ATs and XTs
using floppy disks.  The AT had only a 1.2M drive, and the XT 2 360K drives.
Usually the transfer disks were formatted by the 360k drive, and used for
both AT to XT and XT to AT transfers.  In many hundreds (possibly over a
thousand) transfers, I had only 1 problem, which was a bad disk (wouldn't
reformat, on anything but an apple ][).  There were multiple XTs and AT
involved.

Dave Rotheroe         {allegra, ihnp4, uiucdcs, ctvax}!convex!rotheroe
CONVEX Computer Corporation
Richardson, TX