Search found 272 matches

by SomeGuy
Thu Oct 24, 2019 9:01 pm
Forum: Support
Topic: Old CNC system floppy copying
Replies: 18
Views: 816

Re: Old CNC system floppy copying

Yes, the preservation stream dump is made up of a set of .raw files. Other applications can open those and perform additional analysis. When dumping just a preservation stream, yes, each block will be gray because no decoding occurs. That does mean you don't immediately know if there are any errors....
by SomeGuy
Thu Oct 24, 2019 12:45 pm
Forum: Support
Topic: Old CNC system floppy copying
Replies: 18
Views: 816

Re: Old CNC system floppy copying

It did not decode the first track. It could be that the first track is FM encoded instead of MFM. You could (and should) dump it as a preservation stream dump. You MIGHT be able just write the stream dump back to a floppy, but this also writes any recorded "noise" so it is not ideal. If you could po...
by SomeGuy
Sun Oct 06, 2019 6:58 pm
Forum: Support
Topic: Help Analyzing Kryoflux Stream
Replies: 9
Views: 641

Re: Help Analyzing Kryoflux Stream

In this case, the disk has a boot sector virus, which has destroyed the Bios Pramater Block that contains the geometry information needed for Winimage to open the image. (real DOS can often get along without that information) However, there are no files in the root directory and FAT seems to show no...
by SomeGuy
Sat Oct 05, 2019 10:30 pm
Forum: Software Development
Topic: RAW file reader / Maybe converter to ADF?
Replies: 5
Views: 2763

Re: RAW file reader / Maybe converter to ADF?

This is why I normally start with a preservation stream dump. That first read can sometimes be the last. The stream dump can then be fed back in to the Kryoflux software and decoded. If there are errors, then I inspect/clean the disk and either retry the problematic track(s) or re-dump the entire th...
by SomeGuy
Tue Oct 01, 2019 11:55 am
Forum: Support
Topic: Any way to give statistics of a read when finnished ?
Replies: 1
Views: 275

Re: Any way to give statistics of a read when finnished ?

I've found that a huge chunk of archiving floppy disks is just the process of coaxing bits off of a disk. I always start with a preservation stream dump, and if the kryoflux software fails to decode a sector, sometimes feeding it to a third party program (such as HxC or the tools with the PCE emulat...
by SomeGuy
Wed Sep 25, 2019 11:13 pm
Forum: Support
Topic: Old CNC system floppy copying
Replies: 18
Views: 816

Re: Old CNC system floppy copying

If you do have a DOS based system, you can also try ImageDisk: ttp://www.classiccmp.org/dunfield/img/index.htm

That can be used to image and copy many non-DOS disk formats. It only reads FM or MFM encoded disks and does not usually duplicate copy protection, but usually works for this kind of thing.
by SomeGuy
Wed Sep 25, 2019 2:28 am
Forum: Support
Topic: Control Command rejected by the device. CM: maxtrack=0
Replies: 12
Views: 486

Re: Control Command rejected by the device. CM: maxtrack=0

Unfortunately that is a very vague error message and can mean anything from the KF card not being recognized, to the drive simply failing to seek track zero. Is there any drive activity at all when you try to access the drive? Have you tried a different floppy cable? Using a twisted cable? Checked f...
by SomeGuy
Mon Sep 23, 2019 9:42 pm
Forum: Dumping
Topic: Help dumping Novell Netware 2.15 Gendata floppy
Replies: 10
Views: 413

Re: Help dumping Novell Netware 2.15 Gendata floppy

Isopropyl alcohol can damage low quality, shedding, or scratched disks. If you have used Isopropyl alcohol to remove paint or rust... well, guess what is on the surface of that disk. (rust filled paint!). But higher quality disks can withstand it, and sometimes that is the only way to get really bad...
by SomeGuy
Mon Sep 23, 2019 12:35 pm
Forum: Dumping
Topic: Help dumping Novell Netware 2.15 Gendata floppy
Replies: 10
Views: 413

Re: Help dumping Novell Netware 2.15 Gendata floppy

ImageDisk is typically the prefered tool under DOS. Winimage is the prefered tool under Windows. I did not know if you had Windows on it. ImageDisk is better at imaging DOS 1.x formatted disks and some non-DOS disks, but that should not be an issue in this case. Be sure to write protected you disk.
by SomeGuy
Mon Sep 23, 2019 12:46 am
Forum: Dumping
Topic: Help dumping Novell Netware 2.15 Gendata floppy
Replies: 10
Views: 413

Re: Help dumping Novell Netware 2.15 Gendata floppy

I could be wrong, but it is my understanding that Netware 2.15 used hardware key based copy protection, not disk based copy protection. The above log shows 9 sectors per track with seemingly random numbers of bad sectors on a number of tracks. That does not look like copy protection to me. Looking a...