Copying DVD is easy under Linux.
First put DVD into DVD ROM
Do not mount DVD
Use DD command to copy DVD
Code:
dd if=/dev/hdc of=dvddisk.iso
Replace /dev/hdc with actual DVD rom device, use following command to find out DVD rom device filename
Code:
dmesg | grep -i DVD
You got dvddisk.iso file which can be mounted using following command:
Code:
mount -o loop dvddisk.iso /mnt
Better, you can burn it on DVD itself:
Code:
cdrecord dev=0,1,0 fs=8m -v -eject diskfile.iso
Enjoy!