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Combo and UDMA

Hi all,

maybe I am wrong but I tried to set UDMA2 to my AlBook 15"
combo-drive as follows:

$ hdparm -d1 -X66 /dev/hdc
 setting using_dma to 1 (on)
 setting xfermode to 66 (UltraDMA mode2)
 using_dma    =  1 (on)
$ hdparm -i /dev/hdc

 Model=MATSHITACD-RW CW-8122, FwRev=BA21, SerialNo=
 Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
 RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=unknown, BuffSize=0kB, MaxMultSect=0
 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4 
 DMA modes:  sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2 

 UDMA modes: udma0 udma1 udma2 
 Drive conforms to: device does not report version: 

 * signifies the current active mode

What did I wrong? Is mdma the best mode of that drive?

Thx in advance


  Numeric stability is probably not all that 
  important when you're guessing;-)

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