Search found 283 matches

by SomeGuy
Thu Sep 24, 2020 6:27 pm
Forum: Dumping
Topic: Help with dump
Replies: 7
Views: 134

Re: Help with dump

The commands I use for 360k disks read in a 1.2mb drive are:

Code: Select all

pfi track00.0.raw disk1.pfi 
pfi disk1.pfi -p double-step -R 1 -r 600000 -p decode pri disk1.pri
pri disk1.pri -p decode mfm disk1.psi -f -v
psi disk1.psi disk1.img
psi disk1.psi -L > disk1.txt

erase disk1.pfi
erase disk1.pri
by SomeGuy
Thu Sep 24, 2020 6:12 pm
Forum: Support
Topic: Amiga HD 3.5 disks formatted as DD
Replies: 2
Views: 30

Re: Amiga HD 3.5 disks formatted as DD

Try covering the high density notch.

Most 1.44mb 3.5" drives ignore the density line, relying on the physical density notch.
by SomeGuy
Tue Sep 15, 2020 6:54 pm
Forum: Dumping
Topic: Help with dump
Replies: 7
Views: 134

Re: Help with dump

I was able to write the image to a disk using a 360k drive (removing odd tracks) and it seemed to work. Although I don't know when the copy protection is supposed to kick in, and it expects a second disk in drive B before it will start anything. The question was about trying to decode the intentiona...
by SomeGuy
Tue Aug 25, 2020 1:38 pm
Forum: Support
Topic: How to see which tracks contain data?
Replies: 2
Views: 124

Re: How to see which tracks contain data?

If the data is not confidential, you could post the raw stream dump here for someone to check. The kryoflux actually does NOT know anything about the file system, so extracting a file from a decoded image with bad sectors can easily result in a file with corrupted data. You can also view the raw str...
by SomeGuy
Tue Aug 25, 2020 1:43 am
Forum: Support
Topic: convert 360ko dump with a 360ko drive
Replies: 16
Views: 847

Re: convert 360ko dump with a 360ko drive

Actually, there are some 360RPM 5.25" drives that will slow down to 300RPM depending on the density line. Although that is not the way the standard IBM PC does things. Also, the Kryoflux is good about re-sampling the raw stream when writing to match whatever speed the drive is spinning at. For examp...
by SomeGuy
Tue Aug 25, 2020 1:23 am
Forum: Support
Topic: Write back dumped disk
Replies: 15
Views: 591

Re: Write back dumped disk

Sorry for not responding sooner. I think the relevant commands I used were: pfi track00.0.raw disk1.pfi pfi disk1.pfi -R 1 -r 1000000 -p decode pri disk1.pri pri disk1.pri -p decode text-mfm image1.txt This creates a text file containing decoded MFM. There is no checking of sector validity. Then the...
by SomeGuy
Fri Aug 21, 2020 1:22 pm
Forum: Support
Topic: Write back dumped disk
Replies: 15
Views: 591

Re: Write back dumped disk

What the blazes. What you have read back is not even vaguely what was in the image. If this is right, then your drive is not writing to the target disk at all, and what you read back is the previous contents of the target disk (FM with normal-ish 128 byte sectors).
by SomeGuy
Wed Aug 19, 2020 2:29 pm
Forum: Support
Topic: Write back dumped disk
Replies: 15
Views: 591

Re: Write back dumped disk

Here is a conversion of your newer dump:
http://s000.tinyupload.com/index.php?fi ... 7511977158

Comparing the MFM, between the two, I spotted some minor differences in the data area, so there may have been a read error. (Hard to tell). Did you try writing your new dump back as-is?
by SomeGuy
Wed Aug 19, 2020 2:29 am
Forum: Support
Topic: Write back dumped disk
Replies: 15
Views: 591

Re: Write back dumped disk

Oddly my conversion worked fine on my older DTC, but not on the newer one. One of the tools I was using has known bugs. I've reconverted it and posted it here: http://s000.tinyupload.com/index.php?file_id=67799558819103086620 (at least for me, this one now writes using DTC 3.0) I used the PCE emulat...
by SomeGuy
Sat Aug 15, 2020 11:38 pm
Forum: Support
Topic: Write back dumped disk
Replies: 15
Views: 591

Re: Write back dumped disk

The track 82 issue is a long standing bug. The Kryoflux software ignores any maximum track setting so it can write its own ID track on track 82, and they won't change that behavior. The idea is it is supposed to prevent people from writing "fake" copy protected disks with the kryoflux. Unfortunately...