This is my first ever posting to this list, so please excuse me if I've
f**cked up and broken protocol.
I use an IDE LG DVD-RW drive for backup(GSA-4081B).
Back around 2.6.10 it wrote at typically 1.6-1.7x speed, but thereafter
it dropped to around 0.6-0.7 x.
%hdparm -I /dev/hdd
/dev/hdd:
ATAPI CD-ROM, with removable media
Model Number: HL-DT-ST DVDRAM GSA-4081B
Serial Number: K2B3CFE4600
Firmware Revision: A100
Standards:
Likely used CD-ROM ATAPI-1
Configuration:
DRQ response: 50us.
Packet size: 12 bytes
Capabilities:
LBA, IORDY(can be disabled)
DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
HW reset results:
CBLID- below Vih
Device num = 1
--
Andrew
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