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Old 05-04-03, 06:16 PM   #2
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Join Date: Apr 2003
Posts: 54

I'm getting UDMA 100, and if I had UDMA 133 drives, possibly UDMA 133. Your hdparm thinks that your drive only supports up to UDMA 2 (33MB/s). There was a problem with an earlier release of the nForce2 IDE driver which didn't properly set the 80pin cable mode properly and locked the max speed at UDMA 33. Your RedHat 9 kernel may still be using this older driver. I'm using 2.4.21-rc1 and have no problems (I think it was fixed as of 2.4.21-pre5?)

gambit:~# hdparm -i /dev/hda


Model=ST360021A, FwRev=3.05, SerialNo=3HR08HE1
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117231408
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=no WriteCache=enabled
Drive conforms to: device does not report version: 1 2 3 4 5
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