Re: ADTPro can't open port

["Michael J. Mahon" <mjmahon@aol.com>]

On Jul 3, 6:16 am, Gregory Weston <u...@splook.com> wrote:
> In article <1183409200.858000.320...@g4g2000hsf.googlegroups.com>,
>
>  schmidtd <schmi...@my-deja.com> wrote:
> > On Jul 2, 4:37 pm, Gregory Weston <u...@splook.com> wrote:
> > > I was getting Xs in the progress bar from ADT, but I wasn't sure if that
> > > was a quirk of dealing with DOS disks or indicative of real issues.
> > An 'X' means there was an I/O error reading a block (two sectors in
> > DOS 3.3).  If you get a row of Xs, then it'll definitely take too long
> > to get back to the server, which will time out.  You can send the ADT
> > 1.32 disk (part of the ADTPro distro) back and forth to test... it's
> > in DOS 3.3 format.
>
> > Any chance your disks have a 40-track DOS or something else extra
> > special on them?
>
> Nope. Bog-standard 35-track, 16-sector disks. I tried half a dozen. I
> could start up from all of them and read random chunks of data off them,
> and they all gave me solid lines of X from ADTPro.

Try verifying them with a program like Copy II Plus.  It will
instantly show
if your drive is having trouble with any sectors on a disk.

Randomly reading data is not likely to catch an error or two on each
track.