I just did a very quick check on udma6 in google and found this page by
Samsung
http://www.samsung.com/Products/HardDiskDrive/support/faqs/faqs_20030723_0000007938.htm
It appears that udma5 is 100MB/sec, but your drive does support the
faster speed. I wonder if you need a motherboard bios upgrade (if your
mb supports 133MB /sec)
scott
Levi Bard wrote:
> ...
>
> Here's the drive specs:
> Model=SAMSUNG SP1213N, FwRev=TL100-24, SerialNo=0642J1FWB18403
> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
> BuffType=DualPortCache, BuffSize=8192kB, MaxMultSect=16, MultSect=16
> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=234493056
> 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: (null):
>
>
> So, by increasing the read-ahead, I can get quite a bit of improvement
> in the buffer-cache read, but none in the disk read. I wonder if the
> difference between mine and yours (scott's) is due to the udma6/udma5
> mode difference?
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