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Copying CD w/ "Unrecoverable read error at..." Result is damaged to cdr

Hello Experts,

I have 3 cdr writer

> HP dvd writer dvd300i
>Samsung RW Combo
>ASUS

 Both HP and Samsung can write at the speed of 48x and ASUS is up to 16x. I have tried copying a VCD using the writer, setting the speed to 16x usingthe same cdr with 48x speed.

Result, for HP and Samsung always have this msg "Unrecoverable read error at..." I using nero to copy. When I played the copied cd on my player, only the cd that was copied using ASUS work I mean can be played on my player.

Pls. advise why is this so? Thanks in advance for the support.

Regards,
ESORI
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esori
Asked:
esori
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1 Solution
 
Adrian DobrotaNetworking EngineerCommented:
esori .... there are multiple possible reasons for that.
CDWriting at higher speeds cause the laser beam to pass faster over a  pitch and not to burn it so "deep" or "clear"
Also, that could depend on media (CD brand) you are writing on. There are known incompatibilities between certain CDBurners and CDs, but is unlikely for both HP and Samsung to have issues with the media type you are using.
 Maybe you tried to overburn, and only the Asus from those three overburns as much as needed.
Have you copied the image of the original CD on the HDD first? Maybe it has a scratched CD, and usually CD units that read slower read more accurate (in fact lots of them reduce the speed when a difficult_to_read area occurs. As the ASUS is the slower one of the three, I bet on a most accurate reading performance and a stronger writing laser beam 9due to slower write speed).

If I'm wrong with the assumptions, please advise.
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LucFEMEA Server EngineerCommented:
Also, this might be a copy protected cd-rom (I'm not sure if I'm allowed to give this information, correct me if I'm doing the wrong thing)

Try copying it with a program like Blindwrite => http://download.com.com/3000-2242-10238614.html?tag=lst-0-1

LucF
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Adrian DobrotaNetworking EngineerCommented:
   I don't think you're doing something wrong Luc, but also I don't think it's a protected CD since it's a VCD if I got it right. If it would have been a games CD then protection can be considered as the main guess.
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LucFEMEA Server EngineerCommented:
ok, thanx for confirming, I read the question again and I just read that the disks he copies with his ASUS writer goes all right, so I think your answer is right.

LucF
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esoriAuthor Commented:
I have tried cd's using the top of the line quality cd's like: diamond, silver platinum   triple grade A+, pioneer, ridata, prodics, vertex, iomega, acer, sony, philips and others, still same result.

Accoridng to the review, ASUS is the best cd writer.

I have also tried using the max 48x with the right cd with 48x speed also but the result is much worse compare to a lower speed. So i dont think that the "over burn" really exist. Pls enlighten me more, thanks.
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LucFEMEA Server EngineerCommented:
You should read => http://www.nero.com/en/631933981723825.html#3 then you know what Overburn does.

LucF
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Adrian DobrotaNetworking EngineerCommented:
Overburn means to write more than the phisical space normally allows, not to write "deeper".
Anyway, for a long-living CD I always recomend writing at 12x or slower.
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esoriAuthor Commented:
the movie Im burning is less than 30min so I think I should change my preference.
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LucFEMEA Server EngineerCommented:
btw, one thing, you said: "Unrecoverable read error at..."
It seems to be that you're trying to read them to fast, are you trying to create on-the-fly copies? If so, try copying them by creating an image file first. And putting the read speed down.

LucF
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LucFEMEA Server EngineerCommented:
esori, the size of the movie counts, not the lenght. 74 minutes on a cd only refers to the ammount of audio wich can be recorded. Video uses a bigger amount of data per minute.

LucF
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Adrian DobrotaNetworking EngineerCommented:
  :-)
waiting.....
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LucFEMEA Server EngineerCommented:
kronostm, didn't we have a joke contest once while waiting for a questioner to answer some of our question?
http:Q_20759037.html

LucF
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esoriAuthor Commented:
the file size is only 300mb, I haven't uncheck the create on-the-fly copies yet.
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Adrian DobrotaNetworking EngineerCommented:
You should.
Why?
Because:
  - a slow_to_be_read CD source combined with the lack of Buffer underrun (BURN) or a disabled feature like BURN will surely fail your copy
  - not writing "on the fly" will show you for sure if the problem is reading source CD related or writing on CD.

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esoriAuthor Commented:
but it slowing my burning process down..
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LucFEMEA Server EngineerCommented:
>but it slowing my burning process down..
yes, it will, but you don't ruin cds anymore, your choice ;-)
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Adrian DobrotaNetworking EngineerCommented:
;-)
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LucFEMEA Server EngineerCommented:
esori, any feedback please
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esoriAuthor Commented:
Nothing compares ASUS, I want to sell my HP and SAMSUNG!!!
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LucFEMEA Server EngineerCommented:
Try e-bay ;-)
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Adrian DobrotaNetworking EngineerCommented:
Esori ... if you came to a conclusion, please award points accordig or come with details.

Thank You

KronosTM -  Storage channel Page Editor
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LucFEMEA Server EngineerCommented:
Glad to help, but why the "C" grade?
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Adrian DobrotaNetworking EngineerCommented:
esori .... I'd like to know why you accepted that answer. An explanation is necessary for the C grade also. Maybe I'll ask for this Q to be reopen.

KronosTM - Storage channel Page Editor
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