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root@Aurora:~# hdparm -I /dev/dvd
/dev/dvd:
ATAPI CD-ROM, with removable media
Model Number: IDE DVD-ROM 16X
Serial Number:
Firmware Revision: VER 2.50
Standards:
Used: ATAPI for CD-ROMs, SFF-8020i, r2.5
Supported: CD-ROM ATAPI-2
Configuration:
DRQ response: 50us.
Packet size: 12 bytes
Capabilities:
LBA, IORDY(cannot be disabled)
DMA: *sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 udma0 udma1 udma2
Cycle time: min=120ns recommended=150ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=227ns IORDY flow control=120ns
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root@Aurora:~# hdparm -X udma2 /dev/dvd
/dev/dvd:
setting xfermode to 66 (UltraDMA mode2)
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root@Aurora:~# hdparm -I /dev/dvd
/dev/dvd:
ATAPI CD-ROM, with removable media
Model Number: IDE DVD-ROM 16X
Serial Number:
Firmware Revision: VER 2.50
Standards:
Used: ATAPI for CD-ROMs, SFF-8020i, r2.5
Supported: CD-ROM ATAPI-2
Configuration:
DRQ response: 50us.
Packet size: 12 bytes
Capabilities:
LBA, IORDY(cannot be disabled)
DMA: *sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 udma0 udma1 udma2
Cycle time: min=120ns recommended=150ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=227ns IORDY flow control=120ns
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root@Aurora:~# hdparm -i /dev/dvd
/dev/dvd:
Model=IDE DVD-ROM 16X, FwRev=VER 2.50, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=yes, tPIO={min:227,w/IORDY:120}, tDMA={min:120,rec:150}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no
* signifies the current active mode