[quote=Ruler2112;2001478]I’m not certain I understand what you’re saying though. I assumed that the Lite-on drives had circuitry in them that would give an objective, true count of the errors present on a given disk when used with kProbe. Your post seems to indicate and my experimental results support that the results are as much a result of the drive/firmware being used to scan as it is the disk being scanned. This does not sound like a very positive indication of the error rates present on the disk…[/QUOTE] There is no objective true count of errors on a disc, regardless of how you scan it. There is only a subjective count of errors encountered by a drive reading/scanning the disc at one particular momemnt in time. Other drives may encounter a different number of errors, and the same drive may also encounter a different number of errors if you scan the sae disc again.
I’ve always gone by the number of PI/PO errors as an indicator of whether the burn is good or whether I should re-burn it. Is this a flawed methodology? Should I simply try to copy all the data off the DVD to my hard drive and assume that if it copies, it’s a good burn instead?
Disc Quality scanning is one method of testing a disc, read back e.g. in the form of Transfer Rate tests (which should be smooth with no large drops in speed) is another method, playing the disc in a standalone DVD player is a third method. More methods available wihout using professional testing equipment is jitter and beta tests.
Each of these methods only show a limited view of the quality of a disc, and any methodology that relies completely on only one of these methods can be considered a flawed methodology.
I use several drives for scanning at different scanning speeds, with jitter tests and sometimes beta tests and also Transfer Rate Tests, when testing a new combination of burner, media and burn speed. If all indicators show that results are good, then I usually only perform a verify and a high-speed quality scan on each individual disc.
I’m open to changing how I do things, but I’d like some way to find out if I have a good burn or if there are problems with the disk. With the 0R firmware on the 811 scanning the same disk as above, the PI max is well over 400 and the average is around 130, so I feel as though I have to change how I do something to verify the disks I burn. (It does suck if I change how I verify the disks - I’ve got 4+ years of kProbe scans of different media codes burned on the 5 model drives I have in the house burnt at different speeds and the error rates that resulted, so I’ve got a good idea of how and where to burn what.)
Firmware can change how a drive reads discs. I’ve seen examples of firmware improving reading ability on two other LiteOn drive models, and this also impacts reported PIE/PIF.
You decide for yourself how much time you’re willing to spend on each disc. The less time you spend testing, the higher the risk of not detecting a problem.
Personally I’d get a newer LiteOn drive if you want to scan every disc you burn.
BTW, I LOVE your signature! I’m a dragon sign on the Chinese calendar and am going to have to use it sometime.
Yes I like that quote too. I can’t take credit for inventing it though - someone unknown to me came up with it, probably inspired by the quote from Tolkien’s Lord of the Rings: [I]Do not meddle in the affairs of wizards for they are subtle and quick to anger.[/I]