Same problems here on gutsy. Got 7200 hitachi pata drive, wich reports
that it should support udma5. It's set on udma2 and hdparm can't change
this parameter (or any other). The read/write times are making me really
annoyed.
hdparm -i /dev/sda:
Model=HTS721010G9AT00 , FwRev=MCZOA51A, SerialNo=
MPC0N7Y0H8P3UL
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=7539kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=195371568
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5
AdvancedPM=yes: mode=0x80 (128) WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 3a: ATA/ATAPI-2,3,4,5,6
hdparm -tT:
Timing cached reads: 1390 MB in 2.00 seconds = 695.08 MB/sec
Timing buffered disk reads: 18 MB in 3.46 seconds = 5.20 MB/sec
uname -r:
2.6.22-14-generic
hdparm -d1 /dev/sda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
--
hdparm - cannot set dma on IDE hard drive that works via pata
https://bugs.launchpad.net/bugs/110636
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