Search found 353 matches

by ZrX
Tue Oct 29, 2019 1:53 pm
Forum: Support
Topic: Errors Attempting To Write Stream Files
Replies: 27
Views: 866

Re: Errors Attempting To Write Stream Files

From the first post: "77 tracks of 16 sectors of 256 bytes, double side, single density, 500kb/s data rate" This is somewhat confusing, as 500kb/s would mean the media is high density, not single density. Also 16x 256 byte sectors would fit nicely on a double density disk. Are both drives 1.2MB HD d...
by ZrX
Mon Oct 28, 2019 8:16 pm
Forum: Support
Topic: Errors Attempting To Write Stream Files
Replies: 27
Views: 866

Re: Errors Attempting To Write Stream Files

I really have no idea why KryoFlux only gets noise from the disk if it was working earlier with the old PC setup.

Both sides of the disk show noise almost like on unformatted disk.
by ZrX
Mon Oct 28, 2019 6:55 pm
Forum: Support
Topic: Errors Attempting To Write Stream Files
Replies: 27
Views: 866

Re: Errors Attempting To Write Stream Files

From the noise I can see very faint sectors marked (the light radial markings, the dark wiggly lines I have no idea what are those). The disk clearly spins ok with the drive used with KryoFlux. And what drive originally wrote the sectors was also spinning ok. But what has happened in between I have ...
by ZrX
Sat Oct 26, 2019 10:59 pm
Forum: Support
Topic: 8 inch disks with different sector sizes
Replies: 2
Views: 228

Re: 8 inch disks with different sector sizes

You can only generate two different imagefiles of such disks and manually splice together a single imagefile from the used tracks. If such imagefile would work for something is anyones guess. KryoFlux doesn't know how many heads a diskdrive might have, so it sends the electronic signal to select whi...
by ZrX
Mon Oct 07, 2019 10:19 pm
Forum: Software Development
Topic: can Kryoflux opensource DTC (windows and linux)
Replies: 5
Views: 489

Re: can Kryoflux opensource DTC (windows and linux)

Opensourcing is highly unlikely due to the commercial nature of the product.

There's also a lot of work being done behing the scenes with the next "DTC" to make it a much more versatile utility in the future. But patience is needed. :)
by ZrX
Mon Oct 07, 2019 10:13 pm
Forum: Software Development
Topic: RAW file reader / Maybe converter to ADF?
Replies: 5
Views: 1337

Re: RAW file reader / Maybe converter to ADF?

The problem of saving the read with least errors is annoying in case of attempting recovery. I guess things work like they do because KF/DTC was initially meant for preservation of factory-state originals in most pristine condition, and disks with errors are only useful in stitching together good du...
by ZrX
Mon Oct 07, 2019 10:04 pm
Forum: Support
Topic: Help Analyzing Kryoflux Stream
Replies: 9
Views: 542

Re: Help Analyzing Kryoflux Stream

Yup, "Stoned" was what I found from wikipedia matching the infected sector. I started looking for the relocated boot sector by searching the hex values $55AA which often is found at the last two bytes of the sector. There were couple of matches that looked like a valid sector. Your mention of PCjr c...
by ZrX
Mon Oct 07, 2019 2:54 pm
Forum: Support
Topic: Help Analyzing Kryoflux Stream
Replies: 9
Views: 542

Re: Help Analyzing Kryoflux Stream

The first sector gave some clues about the virus. After finding some information about it and how it works, I used a hexeditor to locate and copy back the sectors the virus had relocated to another sectors on the disk. Very basic tools, but you have to understand a bit how disks work and what you ne...
by ZrX
Sun Oct 06, 2019 8:25 pm
Forum: Support
Topic: Help Analyzing Kryoflux Stream
Replies: 9
Views: 542

Re: Help Analyzing Kryoflux Stream

Inner tracks are in a bad shape, enought to damage 7 tracks on the top side of the disk.

The virus has moved the MBR, FATs and directory, and after restoring them in place the contents could be extracted.

https://www61.zippyshare.com/v/d85Vuj8x/file.html
by ZrX
Thu Oct 03, 2019 6:00 am
Forum: Support
Topic: Old CNC system floppy copying
Replies: 18
Views: 630

Re: Old CNC system floppy copying

I've seen an old manufacturer preformatted floppy from some teletype machine where the disk had a hidden track containing a serial number without which the machine doesn't accept the disk. Lately I've also been looking into an old oscilloscope for a friend where a manufacturer preformatted disk is r...