well, it depends on what kind of softwear you had to burn your cd.
Cdrw dvdrw
i have nooo clue there is something called try using google wattt:P
CDR CDRW DVDR DVDRW Blueray
its either a re-writable disk or its not!
Yes.
CD-RW
A floppy disk DRIVE can read, erase and save information on a floppy disk. The disk can't do it by himself.
Yes, of course!
Formatting your hard disk for the PS3 will erase everything on it. If you are adding a hard disk to your PS3 it will prepare the drive for the system.
Yes - that's basically what a hard disk is for. Perhaps I'm missing your question - can you rephrase it?
go to disk utility and you have the option to erase there
To erase a floppy disk with magnets, you would need a strong magnet, such as a neodymium magnet. By placing the magnet close to the disk's magnetic media, the magnetic fields can disrupt the data stored on the disk. However, this method is not highly reliable, as the effectiveness depends on the strength of the magnet and the type of disk. Additionally, using magnets can potentially damage the disk, making it unusable.