On Tue, Apr 24, 2001 at 03:06:38PM -0500, Stephen E. Hargrove wrote:
> On Tue, 24 Apr 2001, Mike Fedyk wrote:
> >
> > Is it a western digital? Really old? Do you have an unsupported chipset?
>
> Yes, it's a WD. Probably 5 years old, max. The chipset (which escapes me
> at the moment) is support, to the best of my recollection.
>
> > Maybe we can get you using some form of dma with this drive.
> >
> > Post the output of hdparm -i /dev/hda
>
> /dev/hda:
>
> Model=WDC AC38400B, FwRev=32.02S32, SerialNo=WD-WM6210073506
> Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq
> }
> RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=22
> BuffType=DualPortCache, BuffSize=512kB, MaxMultSect=16, MultSect=off
> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=16514064
> IORDY=on/off, tPIO={min:160,w/IORDY:120}, tDMA={min:120,rec:120}
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: mdma0 mdma1 *mdma2 udma0 udma1 udma2
>
>From all of the messages I've seen on lkml, I wouldn't enable dma unless
you're feeling adventurous. You can use hdparm -m16 -c3, and it should give
you a performance boost.
I have a 35GB WD that I'm going to play with to see if I can get it working
with dma reliably.
If you do, I'd compile a kernel with the ide patch to get more features of
your ide chipset (PIIX3) supported.
