Re: Extracting files off “unknown” 8 inch disks. Any thoughts…
cisin at xenosoft.com
Fri May 5 15:14:27 CDT 2017
On Fri, 5 May 2017, Chuck Guzis via cctalk wrote:
> I didn't mean what I think you thought I meant.
> The immediate problem
> is getting data--any data at all. If you can retrieve every sector on
> the disk, then it's just a matter of software to unravel the filesystem.
> DEC filesystems in general are pretty well documented, even if you have
> to wade through the strangeness of things such as RAD50 file names.
Sometimes easy, sometimes not
> Yes, flux-transition (e.g. catweasel) tools do exist for RX02
> double-density reading and writing. I've used them in the past. At
> least one runs under Linux and allows one to copy dd-style sector by sector.
good to know!
I don't anticipate doing any, but I'm glad to see that somebody has put
> But first you need the bits. Without those, the filesystem is just a
> useless abstraction.
But, it turns out that there are multiple people handy who happen to have
the machine. And they could TRIVIALLY accomplish what we would have to
put a little bit of work into. If there weren't, then the next step
would, indeed be to look at raw images of tracks.
> Data first--interpretation later.
Although, when I have an "unknown" disk, before I launch a sector editor,
I type "DIR", just in case it ISN'T anything challenging. I didn't try
flux-transition until I failed with my sector editor.
Grumpy Ol' Fred cisin at xenosoft.com
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