pi/po testing

Discussion in 'CD/DVD/BD Blanks' started by plato, Dec 18, 2007.

  1. plato

    plato Well-Known Member

    I am a bit confused now...
    If I use Nero CD-DVD Speed scanning for example "Romeo Must Die" there is the following situation:
    If I select "C1/C2 - P1/PO Test" with the maximum speed there are found few damaged and also some bad sectors.
    If I use a lower speed for example 6x there are found no damaged and bad sectors.

    I burned the disc with CloneDVD 2 without using the speed-control AnyDVD is offering so the maximum speed was used for creating the image.

    If I scan the copy with "C1/C2 - P1/PO Test" and maximum speed there are found damaged and bad sectors.
    If I scan the copy with a lower speed there is not found anything.

    Question: Does this mean that using a high speed (due to AnyDVD speed control was disabled) CloneDVD 2 produced bad sectors on the copy?
     
  2. Webslinger

    Webslinger Retired Moderator

    No, but it may produce read errors during the reading process.
     
  3. plato

    plato Well-Known Member

    ... and it will also have consequences for the copy?
     
  4. Webslinger

    Webslinger Retired Moderator

    I don't see how you can produce one with Clonedvd if you're getting read errors. Clonedvd will give you an error message and stop.

    So no, for you, I don't see how it would affect the copy. You simply won't have one.
     
  5. plato

    plato Well-Known Member

    If I scan the copy with "C1/C2 - P1/PO Test" and maximum speed there are found damaged and bad sectors.
    If I scan the copy with a lower speed there is not found anything.


    My two sentences right at the beginning were concerning the copy so I was wondering how this would be possible.

    But thank you for the information which I did not know (CloneDVD would show an error message).
     
    Last edited: Dec 18, 2007
  6. Webslinger

    Webslinger Retired Moderator

    If you play your backup it's not being read at "max speed", so no that doesn't "have consequences for the copy".
     
  7. Webslinger

    Webslinger Retired Moderator

    It's possible because some drives may be unreliable as readers at higher speeds (they simply may produce read errors).

    By the way, some drives are also relatively useless for doing pi/po testing (the results are not trustworthy).
     
    Last edited: Dec 18, 2007
  8. plato

    plato Well-Known Member

    You mean if I watch the movie with the drive at the PC?

    I also thought that CloneDVD would use the highest speed reading the DVD and because the drive seems to produce errors reading at a high speed I thought the drive would burn bad sectors due to reading false from the original DVD.
     
  9. Webslinger

    Webslinger Retired Moderator

    Playing from anything--not just the PC

    It may. You can inhibit this using Anydvd's speed control feature, possibly (depending on the drive).

    No. Clonedvd will give you errors. You won't be able to produce a backup. Period.
     
  10. plato

    plato Well-Known Member

    Thank you for your explanations.
    (I have to excuse myself but I am a complete layman concerning hardware... :eek:)