Need advice on how to recover 5.25" floppy

[ZrX]

The resulting file from -i6 is d64 regardless of the suffix.

[harlus]

it's there some way to save it in .img format?

[brightcaster]

Image format is almost the same as d64! Both is basically a sector-for-sector copy of a disk...

683 sectors of 256 byte resulting in 174848 byte which is the length of a d64 file.
2880 sectors of 512 byte resulting in 1474 560 byte which is the lengt of a standard img file (1,44 MBdisk)

There are no aditional information stored in theese files (nothing that isn't on the disk itself...).

So, if you wan't it in image format you can rename .d64 to .img

David

[harlus]

Image format is almost the same as d64! Both is basically a sector-for-sector copy of a disk...

683 sectors of 256 byte resulting in 174848 byte which is the length of a d64 file.
2880 sectors of 512 byte resulting in 1474 560 byte which is the lengt of a standard img file (1,44 MBdisk)

There are no aditional information stored in theese files (othing that isn't on the disk itself...).

So, if you wan't it in image format you can rename .d64 to .img

David

Ok perfect, thanks for the explanation



I have another question, i'm just curious about this disk (it's probably a MFM disk, not related to c64 disks):
https://filebin.net/wuw31kto54w81vev
It seems unformatted but looking at the graphs it seems there is something, it's not noisy like unformatted tracks. Have you any idea of what it is? Physically the surface of the disk seems brand new (no scratches).
It's not an important disk, i'm just curious.

[brightcaster]

Just a quick shot: Could be a 80 track disk reading with a 40 track drive! As there are shades of a 15 sectors per track format maybe a 1,2Mbyte DOS Disk?

David

[harlus]

Just a quick shot: Could be a 80 track disk reading with a 40 track drive! As there are shades of a 15 sectors per track format maybe a 1,2Mbyte DOS Disk?

David

I'm not sure if i understood your question, however this is the label on the disk:

https://i.imgur.com/Qj2yPxI.jpg

[SomeGuy]

That is a 1.2mb (96tpi/80track high density) floppy disk. You must read it using a 1.2mb 5.25" floppy drive. It will not read in a 360k (48tpi/40track low density) drive.

[harlus]

Is there some way to write on a ibm dos floppy?
I tried the "WildeWutz" GUI but it says "supported file types: ADF, G64, IPF & STREAM", is there some way to write a .img file?

[ZrX]

There is a way to create raw stream files from standard nonprotected DOS disk .img imagefiles using HxCFloppy software and then writing from those using KryoFlux.

[harlus]

There is a way to create raw stream files from standard nonprotected DOS disk .img imagefiles using HxCFloppy software and then writing from those using KryoFlux.

I tried the conversion but it seems it's not working, it only writes a single track, and it seems it always write any track on the 1st track of the disk.
Is there a way to fix it and automatize the process? (also a batch script would be fine)

Here it's the log from WildeWutz:

Writing using default precomp factor...

C:\path\01.0.raw" -e81 -d0 -dd1 -w

Image name: C:\path
Image type: RAW
Image sides: 2
Image tracks: 42
Analysis time: 2.454 s
Side 0: td: 1, cf: off, data: 42, unformatted: 0, nfr: 0
Side 1: td: 1, cf: off, data: 42, unformatted: 0, nfr: 0
Filter mode: side -wg: 3, crosstalk -wk: 0[3]
Side mode: side -g: 2, td -k: 1, flip -wy: 0, flippy -y: 0
Write mode: bias -wb: 0, erase -we: 0
00.0 : Writing RAW