/dev/hda:

Model=FUJITSU MPG3409AT E, FwRev=82B9, SerialNo=VH06T150CWSM
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=off
CurCHS=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=80063424
IORDY=yes, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 *udma4 udma5
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive Supports : ATA/ATAPI-5 T13 1321D revision 1 : ATA-1 ATA-2 ATA-3 ATA-4 ATA-5

Timing buffer-cache reads: 128 MB in 0.82 seconds =156.10 MB/sec
Timing buffered disk reads: 64 MB in 2.32 seconds = 27.59 MB/sec

PIII(650)+vt82c686aだとこんな感じ
>>79
chipsetが本当に586Bだったらその辺が限界かもしれず
しかも、ATA66になってないよ