Hey, I purchased the SDCard HxC Floppy Emulator, in try to activate old garage machine which has failed 720kb floppy drive.
I tried to make an image from the floppy (from 1990) with Hxc Floppy Software (floppy disk dump), and although image was created successfully, there was something strange I want to discuss before the real test with the real machine (will be on Sunday).
Attached screenshot of the issue, It looks like something mystery in the floppy, which has 1 special line (data) in the right part, when all the other data is in the left side, and in the output it was copied to the left part. I am afraid it is a specail floppy-protect procedure, that may prevent the machine from start.
Does anybody know about such a strange behaviour of a floppy and how to deal with it?
I can upload file-image of the floopy (created by dd-linux) and the hfe file, if it would be able to help.
I got the image file, and without hesitation i can tell that this is a copy protection.
The track 9 side 0 have 16 sectors "mixed" together (the start of the next sector is in the data part of the previous one).
This is a common protection used on video game disk (Atari ST...).
Some game have up to 255 sectors in one track -> doesn't fit on a normal track if you don't mix them. By this way you cannot copy the floppy disk with an normal computer.
Regarding the dump you have done, this is not exactly the real track layout of the disk, anyway the protection should be fooled because all 16 sectors are on the virtual track (this track contain more data than the others in the hfe file) .
So try the HFE file, it may work. (Don't forget to change the HFE interface mode to Shugart)
Remember that the protection is at the track 9 -> the hxc show the track number on the lcd during reading. This may help to understand if the protection is working or not.
if the garage machine hang at the track 9, other dump tool/solution should be used. (more details if needed).
(there are maybe something else at the track 79...)
Question : Was this floppy disk formatted/created by the machine or is this an original disk ?