[MMMojo1960]

Hi,

I'm trying to make a copy of dvd's i recieved yesterday.
They are Training dvd's that work well when playing on Laptop
When it comes to copying then to my hard drive i get a "Cylindric redundancy file" error.

The strange thing is, all the dvd's are different but i get the same message for the same file on every disc.

Cleaned discs, and all the usual stuff.

Any advise?

THanks

[Roush]

It sounds like the discs have been copy protected.

[MMMojo1960]

Originally Posted by Roush

It sounds like the discs have been copy protected.

Only party then? as some files do copy.

[Maxatoria]

cyclic redundancy check more than likely which is a basic data checking method, can you try a different machine to copy the files from the dvd as the dvd drive may be on its way out

[mac2708]

Using DVD Decrypter may help. See this article here http://en.wikipedia.org/wiki/DVD_Decrypter

A post here http://forum.doom9.org/archive/index.php/t-84606.html was of the opinion:
"If you're getting this on most or all your DVD's then most likely your DVD drive is bad or soon to go bad

[chrisjr]

I think you mean Cyclic Redundancy Check Error don't you? This is a common means of determining if a chunk of data is OK or not. It is entirely possible something has screwed up this particular file so you get the error.

Odd though that you get the same error on multiple disks. If it really is exactly the same file on each disk then that sort of suggests a problem with the file itself rather than the disks.

[MMMojo1960]

Originally Posted by chrisjr

I think you mean Cyclic Redundancy Check Error don't you? This is a common means of determining if a chunk of data is OK or not. It is entirely possible something has screwed up this particular file so you get the error.

Odd though that you get the same error on multiple disks. If it really is exactly the same file on each disk then that sort of suggests a problem with the file itself rather than the disks.

I have just burned a different DVD with no issues what so ever, the dvd drive is new, and its only a certain companies discs that wont copy.

[c4rv]

Originally Posted by MMMojo1960

I have just burned a different DVD with no issues what so ever, the dvd drive is new, and its only a certain companies discs that wont copy.

so everything is pointing to either errors on the source DVD or they are copy protected.

Can you copy the entire contents to hard drive ?

[MMMojo1960]

Originally Posted by c4rv

so everything is pointing to either errors on the source DVD or they are copy protected.

Can you copy the entire contents to hard drive ?

No, it stops at VTS_01.0.vob with the formentioned error.
As i say althought the discs are a ll different...

ie one is for fire safety...another for manual handling etc.....they all seem to come up with the error.

Tried AnyDVD which after 100% burning came up with error code...Common 0 5 4.

[flagpole]

the crc error is part of the copy protection i believe.

dvd copy protection apart from the css encryption is a bit of a black art. one of the tricks is to put the incorrect crc information on the disk so whenever it's being copied by a computer it will think there was an error when there wasn't.

[MMMojo1960]

Originally Posted by flagpole

the crc error is part of the copy protection i believe.

dvd copy protection apart from the css encryption is a bit of a black art. one of the tricks is to put the incorrect crc information on the disk so whenever it's being copied by a computer it will think there was an error when there wasn't.

.. should I try again with dvd _decrypter.....even though one of the files seemed to have every sector as bad?

or...im not good at this lol....make a disc image if possible the try to mount it onto dvd?

[flagpole]

Originally Posted by MMMojo1960

.. should I try again with dvd _decrypter.....even though one of the files seemed to have every sector as bad?

or...im not good at this lol....make a disc image if possible the try to mount it onto dvd?

anydvd should be able to handle crc errors, so i don't know.

certainly if you were copying an option to ignore read errors would be good.

when you copy the files to your hard disk are you running anydvd and copying them with windows or using the option in anydvd?

[MMMojo1960]

Originally Posted by flagpole

anydvd should be able to handle crc errors, so i don't know.

certainly if you were copying an option to ignore read errors would be good.

when you copy the files to your hard disk are you running anydvd and copying them with windows or using the option in anydvd?

I used the option on anydvd.

which eneded in the error "common 0 5 4".

[flagpole]

Originally Posted by MMMojo1960

I used the option on anydvd.

which eneded in the error "common 0 5 4".

i don't know what that means.

[MMMojo1960]

Originally Posted by flagpole

i don't know what that means.

neither does google.

[MMMojo1960]

OK decided to aquire a copy of DVDFAP platinum latest addition.

Copied to hard drive very quicky with no error messages.
Seem to work fine too.

It also So do you think DVDFAP found and erased the Files that were causing the issues with my other attempts?

[flagpole]

Originally Posted by MMMojo1960

OK decided to aquire a copy of DVDFAP platinum latest addition.

Copied to hard drive very quicky with no error messages.
Seem to work fine too.

It also So do you think DVDFAP found and erased the Files that were causing the issues with my other attempts?

i have a feeling you might mean DVDFab, DVD Fap is something else entirely.

crc works like this:
the actual data is written to the disk, then every so often a sum is done on that data. lets say every 5kb you add up all the numbers you've just written and write down the last 3 digits.

then when you come to read the data back you read the data and every 5kb you do the same sum. if the sum gives the same answer as the one on the disk then you know that the data you have read is likely to be the same as it was intended to be when it was written.

as a form of copy protection they deliberately get the sum wrong so when a computer reads it it will spit the dummy.

[MMMojo1960]

Originally Posted by flagpole

i have a feeling you might mean DVDFab, DVD Fap is something else entirely.

crc works like this:
the actual data is written to the disk, then every so often a sum is done on that data. lets say every 5kb you add up all the numbers you've just written and write down the last 3 digits.

then when you come to read the data back you read the data and every 5kb you do the same sum. if the sum gives the same answer as the one on the disk then you know that the data you have read is likely to be the same as it was intended to be when it was written.

as a form of copy protection they deliberately get the sum wrong so when a computer reads it it will spit the dummy.

Yes that's what I meant. But now doing the job anydvd couldn't. But hey, trial and error.

[oilman]

I am surprised dvdfab worked and anydvd did not as dvdfab is very old. What version of anydvd are you using. If a recent version why not send query to slysoft so they can fix anydvd if needed. They are normally very fast.

[Fried Kickin]

Originally Posted by flagpole

i have a feeling you might mean DVDFab, DVD Fap is something else entirely.