In a couple of hours I managed to recover a huge part of data from an erased #floppy .
I made flux copy and loaded it to HxceFloppyEmulator, those are the first two images.
I managed to recover a lot of data with the software RecoveryWhiskers that I am writing.
I found some data that looks like a German MS-DOS 6 boot disk with Doublespace.
The file system data was properly blanked before it was erased (it's all blank data, I can verify from the flux view).
The way I recovered data is to slow down the the disk manually. I am baffled myself how well that worked.
a screenshot of the exported image file in a hex editor. It shows some German strings, talking about MSDOS version 6 and Doublespace
same sector in RecoveryWhiskers, I managed to recover this track it in 5 reads. The flux view shows a very wavy flux.
It also shows a bunch of sectors missing, some tracks have 1-3 sectors missing
flux view of a track. It looks like structures of sectors, but the timings are not readable anymore and it has a lot of timings that look like noise.
screenshot of a floppy disk visualizers showing a disk with all unreadable sectors. The inner section seems to be empty data