[Coco] Disk Problems

K. Pruitt pruittk at adelphia.net
Thu Feb 9 21:07:38 EST 2012

That fixed it.  I feel like a complete idiot.  The controller has gold
contacts so I didn't even bother cleaning the connectors believing that they
were immune to oxidation.  30 seconds with a pencil eraser and all is
working again.  I saved a quick basic program to disk and then ran diskini
on the disk and all is good.  Thanks, Arthur.

Odd that it worked under OS9 but not RSDOS.

----- Original Message ----- 
From: "Arthur Flexser" <flexser at fiu.edu>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Thursday, February 09, 2012 5:47 PM
Subject: Re: [Coco] Disk Problems

Have you tried cleaning the disk controller's contacts with a pencil
eraser or some such thing?  You'd be surprised how often oxidation is
the culprit in weird disk-related failures.

And no, OS-9 makes no use of the ROMs once it is booted up.


On Thu, Feb 9, 2012 at 8:32 PM, K. Pruitt <pruittk at adelphia.net> wrote:
> I'm having a disk problem and figured I'd ask if anybody here has any idea
> on what may be going on. Under OS9 Level II I am having no disk problems 
> at
> all. I can read and write without problem. Under RSDOS I can read the disk
> with no problem but cannot write to the disk. If I try and save to disk it
> appears to save, but the file is not actually present on the disk. If I
> turn verify on it errors out instead of pretending to write to disk. 
> always results in an I/O error. This problem occurs on both floppy drives
> in my system.
> My disk controller is a disto super controller 2 with a tandy rom chip in
> it. Does OS9 utilize that rom chip at all? I double checked the inside of
> the pack and everything is plugged in correctly. I'm the original owner of
> all the equipment involved. It did work the last time I used it... which
> was like 20 years ago.
> Thanks for any help you can provide.
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco

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