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7 Zip CRC Data Error

I have burned some data on DVD discs in 7 zip format. When you try to extract the 7 zip files from the dvd it comes up with this error. Data Error (Cyclic Reduncancy Check). Even if I try to drag the 7 zip file from the dvd to the hard drive without ectracting it right from the dvd I get the same error. Has anybody ever encountered this before? Any suggestions?

Thanks,

Joe

rockiroads

DVD may be knackered.

This is worth a try, take dvd disc out, blow on it and give it a quick rub on a cloth (or your top!) then try again

Now depending on how important it is, u can try recover using s/w such as this http://www.008soft.com/products/cd-data-recovery.htm

Do u have the original zip files? check them, see they are not corrupt
Then there is the possibility that the burn got corrupted. What speed did u use? Try a lower burn setting e.g. 4x write

Joe

ASKER

Thanks for the information. This is happening on all 20 of the DVDs I burned. I burned the files at 8x with Nero. Right now I am trying to see if that software above will work. It is in the process right now, it might take awhile the files ar 4.5 gig.

Thanks,

Joe

rockiroads

Damn
luckily DVD's are cheap

I suggest u lower your burn speed, like I said, try 4x

this can happen if u burn at a higher speed

knoxzoo

What file system were the files originally created on? FAT32, NTFS, ect...???

Joe

ASKER

NTFS

knoxzoo

Then it's likely not a file size limit problem. hmmmm.... Where'd I put that thinking cap???

SOLUTION

fostejo

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SOLUTION

scrathcyboy

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Joe

ASKER

Yeah, I will try winrar. The only reason I used 7zip is because of the compressions. Ill let you know what happens. I also tried the program above as suggested by rockiroads to no avail it still opens it as a corrupted file.

Thanks,

Joe

Joe

ASKER

fostejo,

Forgot to mention that there was no original zip file it was just compressed right to 7zip from a bunch of tiff images.

Thanks,

Joe

knoxzoo

They weren't stored on the hard drive before being written? You wrote them directly to DVD, as in InCD?

Joe

ASKER

no, the images were on the HD before written to DVD. I am beginning to think these might be corrupted. Hopefully there is other software that might work I have tried Winrar with no luck. Any other suggestions?

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rockiroads

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Joe

ASKER

No I have not tried to rezip. I was trying to save the 20 DVD's I had burned that are in 7zip format. I guess I should learn from my mistakes and learn to test all of the DVD's after burning them. I think I will just use regular zip compression for them thanks guys.

scrathcyboy

Please use a different zipper, for your own sake. If you have 20 lost DVDs, its time to move to something else. How about the original winzip from PKZIP? I can attest that you can copy those files to DVD and get them back again. It also has MAX compression which works fine. Please go with something like that.

Joe

ASKER

Yeah, I probley will. I thought 7zip would be able to handle it. We need to split 20 gig files.

knoxzoo

WinRAR