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Old 4th April 2011, 08:12   #136  |  Link
Ghitulescu
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Quote:
Originally Posted by hello_hello View Post
Some drives are better readers than others and different drives will no doubt report different errors. Claiming one drive will report a quality score of 96 while another will report a quality score of 56 seems to be inventing exaggerated values to me.


Not at all. See NEC ND-3540 vs. Plextor PX-750. The percentages represent the good sectors (green) vs. the unreadable ones (red). In the green zone are also included the corrected sectors (ie sectors that were faulty but the drive used the CRC algorithm to recover the valid data).

As long as one uses the same drive to check the discs, no problems, s/he has at least a reference. But combining data from various drives, with various discs, and various programs (I use Plextools and pxscan, some use KProbe, other use CDSpeed and so on) is not a good practice IMHO.
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