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corrupt data on dvd





AndyBroke
some weeks ago I formated my hdd and reinstalled the os. I also copyed all the pictures to a dvd. Now I cant copy them pack to my pc. I can browse trough the dvd and I can see all the files and folders, but I cant open or copy anything. do you think it is possible to recover the data?
abhinav_shah
Can you tell exactly what error you are getting ?
hodgenpodg
you could give this a try http://www.smart-projects.net/isobuster/ ive never personally used it but it seems to state that it can recover data also you just try a google search on "dvd data recovery" to see what you come up with, but if you can provide a specific error that your getting someone here might be able to help you even more
Rocky3478
I'd try the above program, and also check to make sure that the cable going into the back of your DVD drive is all the way in too. So you can't drag and drop the files onto your computer off of the DVD?
knux
um also what is your dvd? a slave master or single drive? also if you can open and view them all you need to do is atleast view them and then you can simply do a printscr and then copy that back into a gfx program. now ive used dvds for a while and have had only a few probs so i dont know unless the burn went bad. what was your program you used to burn it? just a last note everytime you burn something make sure it came out perfect!!! bc if it didnt then things like this happen. when i first used dvds it took me three tries to get the setting right. so.... hope that helps.
gonzo
next time use par2
AndyBroke
I get a CRC error.

Quote:
also if you can open and view them all you need to do is atleast view them and then you can simply do a printscr and then copy that back into a gfx program.


I can not view the images, I can just see that the files are there.
I know that it don't have anything to do with the dvd drive, because it works fine with other dvds. I think that the dvd reader is master, and that the writer is slave.
knux
ok well i did aa quick google search and yes it was that the burn went bad most likely heres a report on the crc error

Quote:
There are plenty of technical resources on the Web that discuss cyclic redundancy checks (CRCs). Most times you won't need to worry about this technobabble. That is, until one it day it suddenly appears and you think - what the hell does that mean? In simple terms, a CRC is bit of mathematics used to ensure that your data is OK when being transfered. It's a checking procedure that quickly identifies when data has been damaged. If you get this message, it means that the file being read by your PC or software is corrupted. However, it does not mean all the data is lost forever. When data is transfered, it is usually in small blocks and each block is given a CRC value. If something goes wrong with the data between the time it leaves the source and arrives at its destination, the CRC sent at the source will no longer match the one that is calculated when the data arrives - this is when the cyclic redundancy check error will appear.

The most common times you will see the cyclic redundancy check error message is when trying to read data from a damaged CD or DVD. Just before it appears, your CD/DVD drive will probably grind and whirl away - your PC may also become a little slugglish.

Less frequent causes are the result of system crashes, and buggy software (hello Microsoft), incomplete downloads (often identified by the misleading message 'This is not a valid Windows file', 'This is not a valid win32 application' or 'Corrupt Zip file'). If this problem happens frequently with downloads, try using a download manager like GetRight. If you have lots of zip files on your system and want to check they are still valid, get a copy of CRC Checker - it's free and can validate zip or rar files in batches - which is much easier than doing it one at a time. This program is worth downloading and keeping on hand for when problems strike.

For CDs and DVDs, the problem is a little different. Normally, when CD/DVD drives get a CRC message from a disc, they try to read the disc again - hence the grinding sound. After several failed attempts, they give up and display the redundancy check error. The problem can be hardware (loose cables, failing drive), software or damaged media. In most cases checking and cleaning the disc is the easiest way to overcome the problem. If different clean discs produce the same error, it is likely to be a hardware issue (check the discs in another drive). Another common cause of these errors is poorly burnt CDs and DVDs - especially those that had numerous or severe buffer underuns. USB burners suffer from this problem when the burn speed is too high (generally above 4X-8X)

If the discs are damaged, you'll probably need a recovery tool to get back your data. CDCheck 3 will work for CDs and DVDs. First it will check the media, and then you have the option to recover the files. It's free for personal use and has saved many people heartache when it comes to recovering lost digital images and videos from damaged CDs.




AndyBroke wrote:
I get a CRC error.

Quote:
also if you can open and view them all you need to do is atleast view them and then you can simply do a printscr and then copy that back into a gfx program.


I can not view the images, I can just see that the files are there.
I know that it don't have anything to do with the dvd drive, because it works fine with other dvds. I think that the dvd reader is master, and that the writer is slave.
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