hdparm [options] [device]

ハードディスクの設定などなど。

Ubuntu8.10 desktop amd64 にて。

sudo hdparm -i /dev/sda

/dev/sda:

 Model=ST3500320AS                             , FwRev=SD15    , SerialNo=            9QM0BFNC
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?16?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=976773168
 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 *udma6
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: unknown:  ATA/ATAPI-4,5,6,7

sudo hdparm -t /dev/sda

/dev/sda:
 Timing buffered disk reads:  320 MB in  3.02 seconds = 106.02 MB/sec