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CDSpeed Scandisk Problems

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CDSpeed Scandisk Problems

Postby nsumner on Mon Mar 03, 2003 9:43 am

When I use CDSpeed's scandisk on my computer I always get the following results all sectors are reported as damaged.

Image

However it doesn't really seem accurate take a look at the results from CDDR which if I read them correctly look very good.

Image

I am using 48X Fuji CDs (Taiyo Yuden). With a 48*24*48 Lite-On CDDR drive. Anybody have any ideas? If I burn at a lower speed the results in CDSpeed are the same!!!
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Postby cfitz on Mon Mar 03, 2003 1:33 pm

CD Speed scan disc, when testing a LiteOn drive, shows damaged sectors where the drive is unable to correct one or more errors at the C2 level of error correction:

http://www.cdrlabs.com/phpBB/viewtopic. ... 3062#53062

There is speculation that the C2 errors shown in CD Doctor don't show these errors, but instead show only errors that were correctable at the C2 level (I really need to ask Miyuri if he can clarify :oops: ). If this is the case, then it is possible that CD Doctor could show no C2 errors while CD Speed shows damaged sectors. However, that doesn't seem likely in your case, since your CD Doctor graph shows virtually no C1 errors while CD Speed shows 100% damaged. I would think that if things were that bad you would see problems showing up in CD Doctor as well, manifested as both C2 errors of some sort and elevated C1 error levels. Maybe Erik will have something to say.

By the way, you can use File->Save in CD Doctor to save the test results graph directly in a PNG format graphics file. In addition to being more convenient than capturing your screen and saving it as a JPEG file, it gives you an image that is both better in quality and smaller in size.

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WSES results

Postby nsumner on Mon Mar 03, 2003 6:55 pm

I was able to find WSES 1.07 floating around the internet. Unfortunately ST was not included so I couldn't get a screen shot. Using the same CD it gave a small number of c1 errors and no C2 errors. This leads me to the conclusion that CDSpeed is to blame no???
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Postby cfitz on Mon Mar 03, 2003 7:27 pm

I'm leaning towards some sort of issue with CD Speed and/or its interaction with your drive, but can't say with certainty. One thing to keep in mind is that WSES and CD Doctor in all likelihood exercise the same drive functions to obtain their data. And those functions are different than those used by CD Speed. So there could be an issue with the drive or its firmware as well. Perhaps the part that supplies C2 error information to CD Speed via the standard mmc command set isn't working properly, while the custom interface that WSES and CD Doctor use is.

If you are feeling adventurous, you might want to try flashing the drive to a different firmware version. I'm not saying there is a good chance that will make any difference, but there is at least a small chance.

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Postby nsumner on Mon Mar 03, 2003 8:52 pm

cfitz wrote:If you are feeling adventurous, you might want to try flashing the drive to a different firmware version. I'm not saying there is a good chance that will make any difference, but there is at least a small chance.
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Here comes the interesting part. I just tried using a DVD that I just put in the machine and the same results. So it isn't directly tied to the drive. Though both the DVD and CD-RW and Lite-On units. Is there any real chance the CD-RW is defective? Should I return the CD-RW for an exchange???
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Postby cfitz on Mon Mar 03, 2003 9:18 pm

nsumner wrote:I just tried using a DVD that I just put in the machine and the same results.

Same results with CD Speed, I presume, since CD Doctor and WSES don't work with LiteOn DVD drives.

Well, now that you have tried it in two different drives with the same results, it would seem that the source either has to be the disc itself or CD Speed and the infrastructure on which it depends.

I have three suggestions. First, try the disc in another machine with another installation of CD Speed. If it turns out okay there, which I suspect it will, that and the duplicated results on the two different drives in the original machine pretty much rule out the disc and the drives, and leave the finger pointing in the general direction of CD Speed.

Second, are you using CD Speed with Nero's ASPI layer, or with another ASPI layer? I think CD Speed is happiest with Nero's layer, although I haven't personally tried it with any other (such as Adaptec's). If you aren't using Nero's ASPI layer, then I suggest you do try it. You can get it here by clicking on the 'Nero ASPI manager' link:

http://www.cdspeed2000.com/go.php3?link=download.html

Third, try testing some pressed CDs, both data and audio.

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Postby nsumner on Tue Mar 04, 2003 8:17 am

cfitz wrote:Well, now that you have tried it in two different drives with the same results, it would seem that the source either has to be the disc itself or CD Speed and the infrastructure on which it depends.

I have three suggestions. First, try the disc in another machine with another installation of CD Speed. If it turns out okay there, which I suspect it will, that and the duplicated results on the two different drives in the original machine pretty much rule out the disc and the drives, and leave the finger pointing in the general direction of CD Speed.


I need to try this still unfortunately I only have one machine so it will have to wait until probably later today.

cfitz wrote:Second, are you using CD Speed with Nero's ASPI layer, or with another ASPI layer? I think CD Speed is happiest with Nero's layer, although I haven't personally tried it with any other (such as Adaptec's). If you aren't using Nero's ASPI layer, then I suggest you do try it. You can get it here by clicking on the 'Nero ASPI manager' link:


As per your suggestion I tried putting Nero's Aspi layer in the toolkit directory to the same results (likely conclusion CD Speed work fine with Adaptec 4.60 ASPI). I tried a pressed CD and that CD comes out fine. So the mystery seems to continue. Personally I am really suprised by all these results. I will update on the CDs used in another machine.[/quote]
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Postby Wedge Maniac on Tue Mar 04, 2003 5:33 pm

What does in mean when scan disk finds a "damaged" sector, yet I see no problems when using the cd?
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Postby cfitz on Fri Mar 14, 2003 7:58 pm

Nsumner, are you running on an NVIDIA motherboard? Check this thread:

http://www.cdrlabs.com/phpBB/viewtopic. ... 7532#57532

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Postby cfitz on Fri Mar 14, 2003 8:09 pm

Wedge Maniac wrote:What does in mean when scan disk finds a "damaged" sector, yet I see no problems when using the cd?

Hi Wedge Maniac. I just saw this question while I was updating nsumner's problem. A sector reported as "damaged" in CD Speed is typically one that has errors that can not be corrected at the C2 level of error correction but that can still be read by means of higher-level error correction:

http://www.cdrlabs.com/phpBB/viewtopic. ... 3062#53062

A data disc (mode 1 or a mode 2 form 1) has yet another layer of error detection and correction in addition to the C1 and C2 levels. So often even errors that get past the C2 level can be corrected and the sectors successfully read. That is what a "damaged" sector in CD Speed is: one with C2 errors that were correctable either at the C2 layer or, more likely, using the extra mode 1/ mode 2 form 1 ECC, and thus remain readable. If the sector isn't readable at all, CD Speed will show it in red, and then you would have problems using the CD.

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