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To blank the CD / DVD RW medium in Ubuntu, I use application called wodim, first find out name of your dev for optical drive, easy way is to use
$ wodim --deviceswodim: Overview of accessible drives (1 found) :------------------------------------------------------------------------- 0 dev='/dev/sg1' rwrw-- : 'hp' 'BDDVDRW CT21L'-------------------------------------------------------------------------$ wodim -vv dev=/dev/sg1 blank=fastThis is sample output for blank=all:
$ wodim -vv dev=/dev/sg1 blank=allTOC Type: 1 = CD-ROMwodim: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits.scsidev: '/dev/sg1'devname: '/dev/sg1'scsibus: -2 target: -2 lun: -2Linux sg driver version: 3.5.34Wodim version: 1.1.11Using libusal version 'Cdrkit-1.1.11'.SCSI buffer size: 64512Device type : Removable CD-ROMVersion : 5Response Format: 2Capabilities : Vendor_info : 'hp 'Identification : 'BDDVDRW CT21L 'Revision : '1.02'Device seems to be: Generic mmc2 DVD-R/DVD-RW.Current: 0x0014 (DVD-RW sequential recording)Profile: 0x0040 (BD-ROM) Profile: 0x0012 (DVD-RAM) Profile: 0x002B (DVD+R/DL) Profile: 0x001B (DVD+R) Profile: 0x001A (DVD+RW) Profile: 0x0016 (DVD-R/DL layer jump recording) Profile: 0x0015 (DVD-R/DL sequential recording) Profile: 0x0014 (DVD-RW sequential recording) (current)Profile: 0x0013 (DVD-RW restricted overwrite) (current)Profile: 0x0011 (DVD-R sequential recording) Profile: 0x0010 (DVD-ROM) Profile: 0x000A (CD-RW) Profile: 0x0009 (CD-R) Profile: 0x0008 (CD-ROM) Profile: 0x0002 (Removable disk) Using Session At Once (SAO) for DVD mode.Drive current speed: 4Drive default speed: 4Drive max speed : 4Selected speed : 4Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd).Driver flags : SWABAUDIO BURNFREE Supported modes: PACKET SAODrive buf size : 1409024 = 1376 KBBeginning DMA speed test. Set CDR_NODMATEST environment variable if devicecommunication breaks or freezes immediately after that.Track 1 start -150Current Secsize: 2048HINT: use dvd+rw-mediainfo from dvd+rw-tools for information extraction.Speed set to 5540 KB/sStarting to write CD/DVD at speed 4.0 in real BLANK mode for single session.Last chance to quit, starting real write in 0 seconds. Operation starts.Performing OPC...Blanking entire diskBlanking time: 1000.118s
In Ubuntu, if you have loaded GUI like Unity, it automatically mounts inserted media so after blanking your media disk, unmount it, eject and reapply to have a blank disk ready for use.
$ mount Command mount lists all mounted media, look for your DVD, in my case it is /dev/sr0, type iso9660. Use umount to unmount this media.
/dev/sda1 on / type ext4 (rw,errors=remount-ro)proc on /proc type proc (rw,noexec,nosuid,nodev)sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)none on /sys/fs/fuse/connections type fusectl (rw)none on /sys/kernel/debug type debugfs (rw)none on /sys/kernel/security type securityfs (rw)udev on /dev type devtmpfs (rw,mode=0755)devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)none on /run/shm type tmpfs (rw,nosuid,nodev)binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)/dev/sr0 on /media/Data disc (04 Nov 13) type iso9660 (ro,nosuid,nodev,uid=1001,gid=1001,iocharset=utf8,mode=0400,dmode=0500,uhelper=udisks)$ umount /dev/sr0Wodim is in main repositories, to install wodim use:
$ sudo apt-get install wodim