Search found 6 matches

by Oliver2018
Wed Feb 06, 2019 11:35 pm
Forum: Dumping
Topic: Workflow to modify a standard floppy
Replies: 9
Views: 536

Re: Workflow to modify a standard floppy

Thanks for the tip. I will try to convert a sector image into a stream file with the emulator.
by Oliver2018
Wed Feb 06, 2019 1:28 am
Forum: Dumping
Topic: Workflow to modify a standard floppy
Replies: 9
Views: 536

Re: Workflow to modify a standard floppy

I understood that it is not possible to write the modified 1474560 sector image back to the HD floppy disk because dtc.exe does not provide the Image type (-i4) in write mode.

Is this correct?
by Oliver2018
Sat Feb 02, 2019 2:31 am
Forum: Dumping
Topic: Workflow to modify a standard floppy
Replies: 9
Views: 536

Re: Workflow to modify a standard floppy

Thank you very much! That was it! I used a 3-mode drive and changed it to 300rpm (via switch). 1. Read dtc -f%tdir%\disk -v300 -m2 -g2 -dd0 -l2 -s0 -e79 -k1 -i0 The '-v300' had no effect :-( There were some errors => but 160 file were created! 2. Convert dtc -m1 -f%TDIR%\disk -i0 -f.\disk.img -i4 so...
by Oliver2018
Fri Feb 01, 2019 12:18 am
Forum: Dumping
Topic: Workflow to modify a standard floppy
Replies: 9
Views: 536

Re: Workflow to modify a standard floppy

ZrX, Thank you very much for your suggestion. Here are the results: 1. Reading dtc -f%tdir%\disk -i0 -m2 -z2 -g2 -dd1 -l2 -s0 -e79 -n+Z=18 -k1 2. Converting dtc -m1 -f%TDIR%\disk -i0 -f.\disk.img -i4 -e79 => switching from "-i2" to "-i4" as suggested reduces the file size from 9MB to 0MB (File Size ...
by Oliver2018
Thu Jan 31, 2019 1:17 am
Forum: Dumping
Topic: Workflow to modify a standard floppy
Replies: 9
Views: 536

Re: Workflow to modify a standard floppy

In order to get familiar with DTC, I tried to create a 1.44 MB sector image from a 1.44MB DOS HDD 3.5" floppy with different settings without success. 1.44 MB DOS 80 Tracks, 2 Sides, 18 Sects, 512 bps The last Image file (512bps sector dump has 9MB instead of 1.44MB). reading dtc -f%tdir%\3xxx -i0 -...
by Oliver2018
Sun Jan 27, 2019 8:56 pm
Forum: Dumping
Topic: Workflow to modify a standard floppy
Replies: 9
Views: 536

Workflow to modify a standard floppy

For a better understanding of how DTC works: how is the exact procedure (DTC command parameters) to read/save a 1.44 DOS HD floppy disk into a file, then convert it to a 1474560 bytes sector image, and then write the modified 1474560 image back to the HD floppy disk?