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Re: Recovering data on a CD-RW

Subject: Re: Recovering data on a CD-RW
Date: 15 Jul 2005 07:00:20 EDT
An electron microscope would require splitting the disk to expose the bit 
surface (and probably require heavy metal staining as well), but a decent 
optical microscope might reveal the bits.  The question then would be how to 
automate the scanning so you are not bent over the microscope all day counting 
bits.

Keith Oxenrider

------- Original Message -------
On Thu, 14 Jul 2005 11:24:16 -0500 Frank Knobbe wrote:On Sun, 2005-07-10 at 
07:50 -0500, Ty Bodell wrote:
I concur with ChayoteMu about the data being unrecovereable if the
disc was erased, 

But is that really the case? Remember, when you "blank" a hard drive
(overwriting it with zero's), you can still recover the previous data by
using a magnetic force microscope. Shouldn't a similar process be
feasible on blanked CD's? I would assume that there are tiny
indentations that remain from a previous burn of a given dimple that
might be observable through electron microscopy. Is anyone aware of such
research?

Regards,
Frank



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