On Fri, 14 Apr 2000, Pat LaVarre wrote:
There's a util out there called ziptools that handles this stuff, I've
used it on the SCSI and parallel Zip drives so I'd imagine it would just
work with the USB drives as well. I can email you an RPM if you can't find
it else where, redhat contrib rings a bell.
Peter
> A Zip cartridge has no external write-protect switch:
> instead there is a write-protect setting stored inside,
> outside of LBA space.
>
> The USB Zip drive supports the Iomega
> vendor-specific command sequence that toggles
> on/off the read/write-protect with/without p*ssword,
> same as other Zip drives.
>
> The Zip command set dates largely from comdex 1994:
> Scsi II rather than Scsi III. Changes since then exist
> only to accomodate bugs in one o.s. or another. Zip
> has no mode page x0A.
>
> I'm not personally familiar with any web doc of Iomega
> vendor-specific opcodes available outside of NDA.
> I've heard there is a patent that lays out the concepts
> involved: without knowing, I imagine the patent doesn't
> specify any particular encoding.
>
> Maybe someone here could point us to some URL's
> of people who reverse-engineer Zip drives? I remember
> once seeing some good photos of the internals somewhere
> out in the I-hate-Iomega space.
>
> Has noone published a read/write-un/protect utility
> for Zip drives connected to Linux thru other kinds of
> cables? Making the p*sswords interchange well is a
> little tricky: you have to construct only p*sswords which
> can be typed "anywhere".
>
> x4402 Pat LaVarre of iOmega [EMAIL PROTECTED]
>http://members.aol.com/ppaatt/nqjava
>
> >>> Nick Hibma <[EMAIL PROTECTED]> 03/29/00 03:05AM >>>
>
> The SCSI-3 command spec specifies that you should be able to switch on
> software write protect by updating the control page (page 0x0ah) / send
> a mode sense command (couldn't be bothered to like exactly which one it
> should be).
>
> That's about the best option you have I guess, other than hardware
> write protect.
>
> Nick
>
> > > Is there a hardware-way (switch) to write-protect
> > > (USB) ZIP drives?
> >
> > I don't think so.
> >
> > --
> > Vojtech Pavlik
> > SuSE Labs
> >
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> --
> [EMAIL PROTECTED]
> [EMAIL PROTECTED] USB project
> http://www.etla.net/~n_hibma/
>
>
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