On 10/25/2015 09:19 PM, Eric Christopherson wrote:
Also, do I always need to cover one hole on a
3.5" HD disk when using
it in an HD-capable drive? Or does the disk or the OS notice it's
been formatted as DD and then treat it accordingly?
In *most* applications, the extra hole in the HD floppy changes the
operating parameters of the drive itself. (There are exceptions, notably
on some IBM systems of the PS/2 variety).
Of course, on a DD-only drive, the drive is blind to the extra hole.
One of the things you have to keep on eye peeled for when handling a
bunch of 3.5" floppies--to read the disk on an HD drive, you need to
cover the hole.