How to wipe a CD-RW/DVD-RW on linux
Run this command to make sure that the cd is unmounted:
Use the "cdrecord" command to quickly erase the CD-RW/DVD-RW
Run this command to make sure that the cd is unmounted:
umount /dev/cdrom
Use the "cdrecord" command to quickly erase the CD-RW/DVD-RW
cdrecord dev=/dev/cdrom blank=fast