Search found 196 matches

by SomeGuy
Wed Mar 06, 2019 8:05 pm
Forum: Dumping
Topic: Checking for and Retrying Bad Sectors while using Stream Files (Preservation)
Replies: 1
Views: 74

Re: Checking for and Retrying Bad Sectors while using Stream Files (Preservation)

Taking a closer look, it is possible to specify the number of revolutions. That will make "KryoFlux stream files, format guided" save whatever number you specify. Yes, more revolutions means larger RAW files. Specifying more than 5 has little value. Since I often deal with unknown formatted, copy pr...
by SomeGuy
Fri Mar 01, 2019 11:01 pm
Forum: Support
Topic: How do I properly save Classic Mac floppies?
Replies: 12
Views: 479

Re: How do I properly save Classic Mac floppies?

In the GUI, the density line setting is at the bottom of the "drive" menu. Logic high=low density logic low=high density. On the command line, that is the -dd option. Preservation stream dumps keep 5 revolutions of data. If it did not get a good read for a sector it will always show bad. I might be ...
by SomeGuy
Tue Feb 26, 2019 3:30 am
Forum: Dumping
Topic: Problem with converting 160K PC Booter to img or other formats.
Replies: 7
Views: 202

Re: Problem with converting 160K PC Booter to img or other formats.

He was not trying to write a new 360k disk with a 1.2mb drive, he was just trying to get the resulting image to run in an emulator. Kryoflux can read low density 5.25" disks fine using either 360k or 1.2mb drives.
by SomeGuy
Sat Feb 23, 2019 7:51 pm
Forum: Support
Topic: How do I properly save Classic Mac floppies?
Replies: 12
Views: 479

Re: How do I properly save Classic Mac floppies?

Ok, those do look like drive compatibly problems. There are boundaries at track 16, 32, 48, and 64 where an Apple variable bitrate disk switches to a lower density. So failure to read tracks below (or above) one of these bounders indicates a compatiblity problem. I use a Teac FD-235HF with fairly go...
by SomeGuy
Sat Feb 23, 2019 3:59 am
Forum: Support
Topic: How do I properly save Classic Mac floppies?
Replies: 12
Views: 479

Re: How do I properly save Classic Mac floppies?

A single sector at track 48, side 0? I'd think copy protection, but not on every disk. Could you post a sample dump? Are these program disks or user-formatted data disks? If these are data disks, were they perhaps recycled former program disks? Different 3.5" drives can have varying results reading ...
by SomeGuy
Wed Feb 13, 2019 3:58 am
Forum: Dumping
Topic: Problem with converting 160K PC Booter to img or other formats.
Replies: 7
Views: 202

Re: Problem with converting 160K PC Booter to img or other formats.

Wow. Thanks! Can you show me the commands you used to covert the stream files? Well, actually, this time I cheated :) Since the PCE tools were acting funny, and even HxC was acting a tad wonkey I just wrote the Kryoflux image to a disk and read it back with ImageDisk. Normally, HxC can export direc...
by SomeGuy
Wed Feb 13, 2019 1:39 am
Forum: Dumping
Topic: Problem with converting 160K PC Booter to img or other formats.
Replies: 7
Views: 202

Re: Problem with converting 160K PC Booter to img or other formats.

The good news is this disk uses a primitive copy protection scheme. It simply uses mis-numbered sectors. That means the lowest common denominator that can store this software is ImageDisk. (Teledisk, Copy II PC, and Transcopy formats would also work). I PMed you a link with the disk converted to Ima...
by SomeGuy
Mon Feb 11, 2019 11:31 pm
Forum: Dumping
Topic: Problem with converting 160K PC Booter to img or other formats.
Replies: 7
Views: 202

Re: Problem with converting 160K PC Booter to img or other formats.

A quick google search for this title indicates that it is copy protected. This means a 160k ".img" file will not work, as you loose the copy protection bits. PCE comes with tools for converting Kryoflux streams to other formats that can retain some forms of copy protection. These include .tc (transc...
by SomeGuy
Wed Feb 06, 2019 2:05 am
Forum: General
Topic: Need advice on how to recover 5.25" floppy
Replies: 26
Views: 1006

Re: Need advice on how to recover 5.25" floppy

Yes, those orange header warnings are normal for user data disks. They are important only if you are archiving an original professionally master software disk, as that indicates a user may have written to the disk, altering the contents. I'd expect the proper power down sequence to be the reverse of...
by SomeGuy
Wed Feb 06, 2019 1:53 am
Forum: Dumping
Topic: Workflow to modify a standard floppy
Replies: 9
Views: 220

Re: Workflow to modify a standard floppy

The -v300 parameter does not change physical drive speed (or different hardware filters the drive may use at different speeds), that only affects decoding. If the data rate on the disk is faster/slower than what the Kryoflux expects, you can tweak that number. I understood that it is not possible to...