Re: [OT] Blinux dd command to copy key disks

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On Wed, 11 Dec 2002, Brent Harding wrote:

> How would you copy the jaws disk in linux? And remove the bad sector from it
> if you need to format it in to a regular disk again? I thought I had one
> around to try, teledisk in dos, but what to use in windows? Teledisk works
> like a dream!

The JAWS key disk has no bad sectors at all.  simply one of them is 
formatted using a different sector size code other than 512 bytes and the 
relevant key information is stored there.  On Linux you can use tools from 
the fdutils package to play around on the disk, finding out where the 
special sector is, what is its sector size code, and finally duplicate it on 
another disk... all from the command line with standard tools.

In a past life I had a script that simply copied JFW key disks on Linux but
it's now lost.  And since I've not used JFW for many years now (I now use
Linux exclusively) I've not rewritten it, and I wouldn't have shared it
anyway (I might tell you how to defeat copy protection measure but won't go
as far as giving away the arm of the crime).  Writing such a script is a
good exercise for someone who might be interested enough though.


Nicolas



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