Read only IDE disk (hardware only)
ntser...@yahoo.com
Could someone can explain me a way how to make a EIDE disk (by
hardware) read only wihtout buying expensive hardware like EIDE device
blocking. I already try grounding signal pin 23 (IOWR) of the IDE
ribbon.. but this doosn't work.
Many thanks
John
CJT
I wish there were a way, but I don't think there is.
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Folkert Rienstra
>
> Hi,
> Could someone can explain me a way how to make a EIDE disk (by hardware)
> read only wihtout buying expensive hardware like EIDE device blocking.
Why hardware?
> I already try grounding signal pin 23 (IOWR) of the IDE ribbon..
Actually that is DIOW-:STOP
> but this doosn't work.
Not really a surprise.
>
> Many thanks
>
> John
Arno Wagner
Cannot be done without an IDE bridge. The problem is that
the disk-controller resides in the disk itself. For older
MFM/RLL disk you could just fix the r/w signal, but with
them the disk-controller was on the controller card.
As a result, making IDE read-only needs something that can
understand IDE commands and block some of them.
The only other cheap way is if the OS suppoerts privilege
separation between admin and user and allows ro mount disks
read-only. On Linux, e.g. this is trivial. Not sure MS has
this feature.
Arno
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