Some don't. The scratches can be covered using a special gel. Or, the disc data can be converted to a working CD disc.
Maybe because your drive is damaged or the disks are to damaged.
They run on BluRay discs.
When the man injured his back he damaged his intervertebral discs.
They are supposed to run cooler & decrease stopping distance.
Hard to say It would all have to depend on the discs involved and the nerves that pass between them. However the body does not repair damaged discs can grow spurs and cause increasing disability.
It depends on the Linux you are running. There are thousands of Linux distros. It is possible that your distro wasn't intended to run DVD-ROM. But most Linux will run them.
DVD mailers are used to send DVD's and compact discs through postal mail. They protect the items from getting damaged along the way.
If you run Install then Repair it shouldn't delete files in "My Documents" (at least it didn't when I did it recently). If you run Install then Install it will delete the files.
what is difference between compact discs and digital versalite discs
Depends on what kind of "discs" you're referring to... (compact discs? brake discs?)
Call the police.
because it's been overheated and damaged.