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我的机器有两块硬盘,linux装在第二块硬盘上
#hdparm -i /dev/hdb
/dev/hdb:
Model=Maxtor 32049H3, FwRev=BAC51KJ0, SerialNo=N30JM69C
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
BuffType=DualPortCache, BuffSize=512kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=40021632
IORDY=on/off, tPIO={min:120,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: disabled (255) WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 0: 1 2 3 4 5 6
# hdparm -d1 -X68 -c3 -m16 /dev/hdb
/dev/hdb:
setting 32-bit IO_support flag to 3
setting multcount to 16
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
setting xfermode to 68 (UltraDMA mode4)
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
using_dma = 0 (off)
为什么打不开DMA呢?各位老大,帮帮忙阿! |
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