Writing DMK back to floppy

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By jepmsx

Master (243)

Аватар пользователя jepmsx

15-07-2022, 16:06

After different trials and errors, I've succeeded to create a td0 file using teledisk.

I've used samdisk to convert the td0 file to dsk and be played with openMSX. Unfortunately it doesn't work. I have also tried to read the floppy disk using samdisk and create a dsk image file without success.

Is there a way to convert a td0 file to a format that can be read by openMSX?

By sdsnatcher73

Prophet (3852)

Аватар пользователя sdsnatcher73

15-07-2022, 16:10

What is the original disk? If it has any form of copy protection it needs to be removed to make it work in DSK format.

By jepmsx

Master (243)

Аватар пользователя jepmsx

15-07-2022, 19:43

I'm trying it with a floppy disk that contains my old basic programs and some image files, no encryption (maybe some bad sector because of aging).

By sdsnatcher73

Prophet (3852)

Аватар пользователя sdsnatcher73

15-07-2022, 22:21

Okay, this is just some guessing here. So supposedly this is a disk formatted by you a long time ago, you saved some stuff, now some sectors have issues. You created a td0 with teledisk, could you try the following:

1. Format a different disk, make sure to do it on a system that verifies the format (e.g. not a Philips MSX2).
2. Write back the td0 to that disk (I believe teledisk can do this).
3. Read that disk with samdisk and create a DSK.

The thought is that the sectors are now okay for samdisk to read (of course the original data in those is lost). On openMSX you can then extract the files from the DSK.

By jepmsx

Master (243)

Аватар пользователя jepmsx

17-07-2022, 06:57

Good strategy!

It has worked!

Thank you very much for your time and the idea. I would have never thought about it

By sdsnatcher73

Prophet (3852)

Аватар пользователя sdsnatcher73

17-07-2022, 07:03

No worries! Glad it worked out.

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