On Donnerstag 18 Februar 2010, James wrote:
> Hello,
>
>
> hdparm -i /dev/hda
>
> Model=IBM-DJNA-371350, FwRev=J76OA30K, SerialNo=GM0GMGB6505
> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=34
> BuffType=DualPortCache, BuffSize=1966kB, MaxMultSect=16, MultSect=16
> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=26520480
> 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
> AdvancedPM=no WriteCache=enabled
> Drive conforms to: ATA/ATAPI-4 T13 1153D revision 17: ATA/ATAPI-1,2,3,4
>
> * signifies the current active mode
>
>
> Should I put the drive into udma4 mode?
>
> If so, wouldn't I use:
>
> hdparm -d 1 -X 68 /dev/hda
>
>
> ???
>
>
> James
no
usually the kernel chooses the right mode. If this one is lower than expected,
you shouldn't mess with it. Either grep for your drive or controller in the
kernel sources - it might be blacklisted - or get a different cable.
Never set udma modes.
