Quote Originally Posted by iwanabeguru View Post
the "dvd rw device" is a device node in your /dev directory
it can be
/dev/hdX #if you have IDE device X=a,b,c,d,e,....
/dev/sdX #in case of SATA device

some distro provides
/dev/cdrom
/dev/dvd

so try something similar

hdparm -i /dev/cdrom
or
hdparm -i /dev/dvd
or
hdparm -i /dev/hda #IDE1 master
or
hdparm -i /dev/sda #first SATA device


samsom@sony-vaio:~$ sudo hdparm -i /dev/sda #first SATA device
[sudo] password for samsom:

/dev/sda:

Model=TOSHIBA MK1011GAH , FwRev=BK002A , SerialNo= 17JES0D6S
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=195371568
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-3,4,5,6,7

* signifies the current active mode




The other commands did not give an output.