Disk wiping support?

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TeaRex
Posts: 120
Joined: Tue Nov 30, 2010 5:36 am

Disk wiping support?

Post by TeaRex »

I was thinking, maybe a little option to overwrite a disk completely with binary zero (no flux transitions) would be useful? Especially if you start adding support for writing 48tpi formats on 5.25", so you can wipe those half-tracks... Just an idea really, not a serious request. What do other people think?

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IFW
Posts: 3079
Joined: Mon Nov 08, 2010 2:42 pm

Re: Disk wiping support?

Post by IFW »

fyi: KF writing always completely wipes a track just like you describe before writing any data. This ensure a (somewhat...) factory new state, like you'd have for duplication and that protections that rely on this would work.
Do you need a separate wipe function or was it just meant for writing?

TeaRex
Posts: 120
Joined: Tue Nov 30, 2010 5:36 am

Re: Disk wiping support?

Post by TeaRex »

I don't necessarily need it at all. There's already such a function in Pete Rittwage's "Nibtools", and doing it on a Commodore 1571 would have the advantage that you can step a wide head in narrow steps on that drive, and thus really wipe out all data, even residues in-between tracks that might be a problem if the target is a 48 TPI system. Which I guess would be difficult to do with any kind of PC drive, right? It was really just an idea to toss around, and maybe see what other people think.

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IFW
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Joined: Mon Nov 08, 2010 2:42 pm

Re: Disk wiping support?

Post by IFW »

As usual: any additional feedback or thoughts are welcome :)

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mr.vince
Posts: 2127
Joined: Tue Oct 05, 2010 5:48 pm

Disk wiping support?

Post by mr.vince »

We have something even better... The Neodymium Disk Eraser. It's an old floppy drive with a special PCB attached and strong permanent magnets instead of heads. Just pop in a disk and wait until it has finished stepping. After that it's like a factory reset. :-)

It's being developed by a fellow chap at a1k.org and we will let you know when we have some PCBs. Mounting magnets with hot glue is pretty easy. Don't toss your old drives!

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