First question: I have a copy of WordStar 2000 for the AT&T UNIX PC that I'd like to dump for preservation, and I'm unsure of the best way to do it. If I'm not mistaken, the UNIX PC used a non-standard disk format, and I was wondering what the best way to dump the disk is. Can I just dump them like any other (PC) floppy disk, or am I going to need special settings.
Second question: Does the KryoFlux support 2.88MB floppy disks? Contrary to what I had always believed apparently there was at least one commercial piece of software released on ED disks. Appsoft Image for NeXTSTEP. There's a seller on eBay currently selling a copy, and I'd love to get it archived, but I'm not sure if the KryoFlux can handle it. I DO have a 2.88MB drive in my RS/6000, so I suppose I could just DD it, but it would be nice to have stream files as well.
The good news it is easy enough to save a flux preservation stream, either using a standard 360k drive or a 1.2mb drive using double stepped track spacing to skip odd track numbers.
From there you can use the kryoflux software to decode the preservation stream files in to an IMG file. In some cases you may be able to concatenate multiple IMG files in to "tar" files. However since IMG loses all sector geometry information it is not an ideal disk storage format.
To preserve the sector layout you probably want to save to the ImageDisk format. I see that Bitsavers stores their AT&T Unix PCs in ImageDisk format. The kryoflux software does not natively support ImageDisk however there are several third party tools that can convert a Kryoflux preservation stream files to ImageDisk.
To the best of my knowledge the Kryoflux does not support 2.88mb disks. Obviously reading such a disk would require a genuine 2.88mb floppy drive in the first place. They use a higher bitrate than 1.44mb disks. There seems to be some question if the Kryoflux can even make flux images from such a drive but the decoding commands do not appear to support that.
Thanks for the info! I'll just dump them as stream files then, I suppose. IIRC, the big disadvantage of just doing a stream dump is that it doesn't show you if you have bad sectors, correct? It's been a while since I tried though, and I may be miss-remembering.
I didn't see the first one when I searched. Thanks for the heads up. As for the other two threads, I did see them, but both are rather old threads, and quite a lot can change. I wasn't sure if the KryoFlux hardware had been updated in the intervening years.
It is also useful when you need to send the image to third party tools - in this case you would need to use one if you wanted to export to ImageDisk format. (Both the HxC software tool and the PCE emulator flux tools will do that)
cpio not tar... pretty much every unix system has cpio available also though. cpio is standarized these days but there was some variation in old versions of it... so tar became more popular as the defacto standard.
thunderbird32, did you ever end up sharing the WordStar 2000 install disk streams for the AT&T UNIX PC?
If so, are they available for this community anywhere? I'm reconstructing my lab with about half a dozen UNIX PCs, and it could be a very nice addition..