DMA gia DVD

[Anakreon]

Antimetopizo ena problima me tin energopoiisi tou DMA gia to DVD drive.
Exo syndesei me to idio kalodio to DVD kai to CDR me tin mitriki.

I entoli  hdparm -i /dev/hdc typonei:
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/dev/hdc:

 Model=Pioneer DVD-ROM ATAPIModel DVD-117 0107, FwRev=E1.07, SerialNo=
 Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
 RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=13395, BuffSize=64kB, MaxMultSect=0
 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
 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 
 AdvancedPM=no
 Drive conforms to: device does not report version: 

 * signifies the current active mode
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otan grafo hdparm -d1 /dev/hdc typonete to parakato minima sfalmatos:
/dev/hdc:
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Operation not permitted
 using_dma    =  0 (off)

Den katalabeno giati apotygxanei i energopoiisi tou DMA afou is syskeyei to ypostirizei.

Anakreon