Only partial Data is read from DVD !!

[Siddharth Mitra]

I have a problem with my backup DVDs. Many of my DVDs are giving redundancy errors but some of the data from each DVD can still be read.
One of my DVD has got different shades of circles on the reading side!!!
idk what happened ... they are good as new no scratch at all .... DVDs are from brands like Sony, Moser bair and writex.
Please tell me what the hell happened to them ...can i still get my lost data from them ??

 

[aevm]

Try reading those DVDs on a different computer.

If you're lucky, they will work, your data is still OK, and it will cost you only $20 to replace your DVD drive.

 

[Hawkeye22]

It could be bit rot or bad sectors on the disk. I don't know what tools you have at your disposal, but I know Nero used to come with a disk check utility.

Google around and I'm sure you can find a utility to scan the DVD for errors.

 

[aevm]

Have those disks ever worked? Maybe the burner did a bad job and they were never any good...

 

[popatim]

its could also the that the chemicals on the media side are breaking down (+/- rw's have a limited shelf-life), or reacting with heat or light; laser-rot caused by outgassing induced by the laser reading the disk (not common in DVD;s at all), Heck theres even a fungus that can eat the stuff.

 

[Hawkeye22]

its could also the that the chemicals on the media side are breaking down (+/- rw's have a limited shelf-life), or reacting with heat or light; laser-rot caused by outgassing induced by the laser reading the disk (not common in DVD;s at all), Heck theres even a fungus that can eat the stuff.

Chemical breakdown is listed under "Optical media" in the bit rot link I provided. I guess that it's hard to see that bit rot is a link. I think I'll update my post and make the text bold also.

 

[popatim]

Yep, I missed it. LoL

 

[aevm]

I've googled that DVD-eating fungus. Scary

 

[Siddharth Mitra]

thanks for the suggestions guys... i'll try to check the DVDs in other DVD writer and scan it with Nero tool u were saying ..... and each of my DVDs were stored in a cool dark place in a plastic pack separately.. i don't think they gonna rot there !!