Re: Error setting dma to hd

[Elijah <desiderata@softhome.net>]

On Sun, 2003-02-02 at 00:20, Calber Chainy wrote:
> Before activating DMA you should check some things.
> 
> See if your hard drive supports dma
> 
> hdparm -i /dev/hda
> 
> /dev/hda:
> 
>  Model=ST360021A, FwRev=3.19, SerialNo=3HR0YT2A
>  Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
>  RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
>  BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=16
>  CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117231408
>  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 udma0 udma1 udma2
>  AdvancedPM=no WriteCache=enabled
> 
> In DMA modes you can see the actual set up of your hard drive, mine is
> set to multiword dma.
> 
> Also you have to check your kernel configuration, see if you have the
> modules that correctly match your chipset, and you have the right cable,
> the 80 pin one.
> 
> lspci shows you what kind of hardware you have in order to install those
> modules.
> 
> Also I recomend you to read carefuly man hdparm and see other useful
> things besides DMA that speed up your HD. ( -u -c -m... )
> 
> Sometimes there are no correct modules (my case) and the maximum state I
> can reach is multi word dma... but is still better than plain disk
> reading and also better than M$ reading disks.
> 
> Hope I have been of some help.
> 
> Chainy.
> 

Thanks for the info Chainy, I got it working now :)

Elijah