[HECnet] DECmate II and OS/278...
Tim Sneddon
tim at sneddon.id.au
Sat Jul 8 08:51:15 PDT 2017
On 8/07/2017 11:31 PM, Johnny Billquist wrote:
> Ah! Teledisk images.
> Basically, that's a proprietary format which is intended to be able to
> restore the disk including the low level format. It's a bit difficult to
> deal with if you are not using Teledisk. I know I have a tool somewhere
> that can extract the actual data from such an image, which is what would
> be more useful when you are writing it on an actual RX50 drive. I
> believe I found it somewhere on the internet many moons ago, but
> hopefully others have it too.
Yeah, I saw some details about the format described. I was only browsing
so I didn't notice a tool, but there were details of the file structure.
>
> In addition, RX50 drives in general only accept preformatted media, and
> RX50 low level format is unlike any other disk format, so you either
> need real RX50 floppies, or else some machine that is able to format
> RX50 floppies. Of DEC equipment, only the Rainbow were actually able to
> format RX50. Generic PCs can sometimes do it, if you have the right type
> of controller and drive, and appropriate floppies. But success with that
> have been a bit random when I've read about it. But I suspect it's your
> best chance, since getting genuine RX50 floppies nowadays is even harder.
>
I have genuine RX50 floppies that have been used in DECmate II and
PRO350 systems. I believe they should be adequately formatted.
Regards, Tim.
More information about the Hecnet-list
mailing list