Nibble mode disk sector editor

hjalfi · 14 February 2022, 01:13

I've just discovered that my FluxEngine floppy drive hardware is producing corrupt Amiga floppies, at a rate of about one bad sector per disk. (But, if you use the FluxEngine client with GreaseWeasle hardware, everything is fine.) Annoyingly, they only fail on a real Amiga. The FluxEngine can read the disks back fine.

It'd be way easier to investigate this if I could use the Amiga itself to do the investigation. Does anyone know of a nibble-mode disk sector editor which will show me the raw MFM data of a bad sector? That way I can figure out exactly which bits are wrong, and, hopefully, fix it.

Galahad/FLT · 14 February 2022, 01:30

Does it only fail on protected disks or does it also fail on AmigaDOS disks?

Nightshft · 14 February 2022, 01:39

I never used it, but the sector editor DiskMonTools by Joerg Strohmayer seems to have a MFM-Editor included.

https://aminet.net/package/disk/moni/DiskMonTools

hjalfi · 14 February 2022, 15:19

@Nightshift: that looks excellent, thanks. I'll give it a try.

@Galahad: the tool supports any adf file (or similar sector image), so saying it's limited to AmigaDOS disks is inaccurate, but it doesn't support copy protected disks at all. The technology supports it but they're a royal pain to describe. See http://cowlark.com/fluxengine/doc/disk-amiga.html.

14 February 2022, 01:13	#1
hjalfi Registered User Join Date: Feb 2019 Location: Zurich Posts: 38	Nibble mode disk sector editor I've just discovered that my FluxEngine floppy drive hardware is producing corrupt Amiga floppies, at a rate of about one bad sector per disk. (But, if you use the FluxEngine client with GreaseWeasle hardware, everything is fine.) Annoyingly, they only fail on a real Amiga. The FluxEngine can read the disks back fine. It'd be way easier to investigate this if I could use the Amiga itself to do the investigation. Does anyone know of a nibble-mode disk sector editor which will show me the raw MFM data of a bad sector? That way I can figure out exactly which bits are wrong, and, hopefully, fix it.

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14 February 2022, 01:30	#2
Galahad/FLT Going nowhere Join Date: Oct 2001 Location: United Kingdom Age: 50 Posts: 8,986	Does it only fail on protected disks or does it also fail on AmigaDOS disks?

14 February 2022, 01:39	#3
Nightshft Registered User Join Date: Mar 2018 Location: Austria Posts: 615	I never used it, but the sector editor DiskMonTools by Joerg Strohmayer seems to have a MFM-Editor included. https://aminet.net/package/disk/moni/DiskMonTools

14 February 2022, 15:19	#4
hjalfi Registered User Join Date: Feb 2019 Location: Zurich Posts: 38	@Nightshift: that looks excellent, thanks. I'll give it a try. @Galahad: the tool supports any adf file (or similar sector image), so saying it's limited to AmigaDOS disks is inaccurate, but it doesn't support copy protected disks at all. The technology supports it but they're a royal pain to describe. See http://cowlark.com/fluxengine/doc/disk-amiga.html.

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