[Coco] Recovering Data from Bad Disks

[Luis Fernández]

If it helps I have this BACKUP, no errors report
and so can pass the defective discs new ones




> Date: Mon, 25 Feb 2013 00:12:34 +0800
> From: cocolistemail at titaniumstudios.com
> To: coco at maltedmedia.com
> Subject: Re: [Coco] Recovering Data from Bad Disks
> 
> Luis,
> 
> That looks interesting. I don't think my PC has a floppy controller in it,
> but I will look into it if all else fails. I suspect that the situation is
> so grim that I will need to take partial sectors where I can get them.
> 
> - Jayeson
> 
> On Sun, Feb 24, 2013 at 11:15 PM, Luis Fernández <luis46coco at hotmail.com>wrote:
> 
> > Hi
> > In : http://www.nitros9.org/howto.html There is a utility called
> > cocodisk, reading bad sectors and marks them with & HEB
> > If you read the original and the support I could easily place the good of
> > the two sectors together
> >
> >
> >
> > ---------------------------------------------------------------------------------
> > Making  CoCoDskUtilPack V 1.1.3A.zip, Scan magazines and organize
> > maltedmedia
> > http://cococoding.com/cocodskutil/ Thank Aaron Wolfe
> > http://www.tandycoco.com Thank Brian Blake and Stephen Fischer
> > My personal blog: http://www.luis45ccs.blogspot.com,
> > Excuse my English, I use google translator, my language is Spanish, I'm
> > Spanish but I live in Venezuela
> >
> > ---------------------------------------------------------------------------------
> >
> > > Date: Fri, 22 Feb 2013 15:21:47 +0800
> > > From: cocolistemail at titaniumstudios.com
> > > To: coco at maltedmedia.com
> > > Subject: [Coco] Recovering Data from Bad Disks
> > >
> > > I have a lot of old Coco disks and now that I have my Coco set up, I'm in
> > > the process of extracting the data off them. I am running Drivewire 4 in
> > > HBDOS mode and BACKUP 0 TO n creates a .DSK per physical disk which is
> > > exactly what I want.
> > >
> > > However, many of them are bad, including everything that has any of my
> > work
> > > on them. I do however have a backup disk for everything, but those two
> > have
> > > a lot of bad disks too. I was thinking that if I extracted what I could
> > > from both versions and hex-diff the .dsk images, I should be able to
> > > recover a lot. I vaguely recall back in the day that there was software
> > > that would allow ignoring (checksum?) errors during copy and often you'd
> > > end up with only one bad byte. I have no idea what that was though. Does
> > > anyone know what I'm talking about?
> > >
> > > Another option would be to write something myself that uses DSKCON as it
> > > would allow me to log out additional info such as which sectors were
> > bad. I
> > > have a vague recollection though that the DSKCON routines don't give any
> > of
> > > the sector data on error?
> > >
> > > - Jayeson Lee-Steere
> > >
> > > --
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> > > Coco at maltedmedia.com
> > > http://five.pairlist.net/mailman/listinfo/coco
> >
> >
> > --
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> >
> 
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