Amiga HD floppies
#1
Hi there,

I've found a box with some Amiga HD floppies from the days when I had a Power Computing HD floppy drive for the Amiga. I've been trying to convert these disks to SCP files, but so far I haven't been successful.

Any suggestions as to what settings I need to use?

Kind regards,

Francis
Dreamland Fantasy Studios
http://www.dfstudios.co.uk
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#2
These should be able to convert these as HD .adf images. You would need to use SPLICE in order to duplicate these.
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#3
(09-14-2019, 11:59 AM)admin Wrote: These should be able to convert these as HD .adf images.  You would need to use SPLICE in order to duplicate these.

Everything I have tried so far fails. Attempting to create ADFs results in every track being read as red. SCP files are unable to be read in WinUAE (the floppy images just come up as 'DF1:????').

When I've been trying to create ADFs of the disks, the files are always 880K so they are not being stored as high density.

Kind regards,

Francis
Dreamland Fantasy Studios
http://www.dfstudios.co.uk
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#4
I've managed to use the HxCFloppyEmulator software to generate 1.76MB ADF images from the SCP images with some success. Some disk images worked, some didn't so I may need to try and reimage those disks.

I'm guessing that SCP isn't able to create HD ADFs yet, or perhaps I am missing a switch or something?

I assumed that WinUAE would have been able to determine if the SCP files were DD or HD, but I guess not.

Kind regards,

Francis
Dreamland Fantasy Studios
http://www.dfstudios.co.uk
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#5
Actually, I gave Jeff the .scp images to test for the HD image support in HxC, which converted fine with the SCP software.  Can you send me a HD disk image that fails (done with SPLICE, using 2 revs) to data @ cbmstuff.com?
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#6
Reimaging the disks worked. I suspect I've forgotten to set the high density option for some of them causing the issue.

Barring some read errors (mostly solved using DiskSalv), I was able to get the majority of the disk contents onto my Amiga.

I'll send an image of one of the disks. Maybe you can suggest something I can do to get better images as the bad sectors always occur around the same point.

Kind regards,

Francis
Dreamland Fantasy Studios
http://www.dfstudios.co.uk
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#7
You can try setting the RETRIES value to be higher. After 10 retries the software steps the head forwards/backwards to try to "scrub" the surface. It could be that the disks are just dirty. Also keep in mind that you should be cleaning the heads of the disk drive you are using with SCP just about every time you make a copy or image. It does make that much difference because oxide comes off easily due to the age of the disks. Cleaning the heads is not optional.
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#8
I've tried setting the RETRIES to 99 and cleaning the disk drive using a cleaning disk and isopropyl alcohol. Unless I'm missing something, I cannot create ADFs of Amiga high density disks using the SuperCard Pro software as all I get are red blocks during the copy process and the software always creates 880K files. I've made sure that the density setting is on 'high'.

The only way I've been able to do this is to create SCP files then use HxC to create the ADFs.

Kind regards,

Francis
Dreamland Fantasy Studios
http://www.dfstudios.co.uk
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#9
Hi, is there a way to increase the flux image revolutions to more than 3 when imaging amiga HD floppies? I found that for normal 880k the 5 rev fixes most errors is it possible to achieve with Hd disks? As it is saying not enough ram capacity, when I have 32gig ram.

Ragrds
Henry
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#10
No, there is no way to increase the number of revolutions. You really only need 2 revolutions to image 100% of any disk. Any more revolutions is a waste of storage space. The RAM capacity warning is about the amount of RAM on the SCP board itself. If you are getting errors then your head and/or disk is dirty. Make sure you are cleaning the heads before every time you image a disk.
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