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Identical disks showing different DMA modes under Windows XP -- why?
I just installed a Hitachi Travelstar 7k60 as my secondary drive
in my Thinkpad laptop, to go with the same model drive as my primary drive. I looked at the device properties for the new drive, and it was showing DMA Mode 2, whereas the primary drive was showing DMA Mode 5. These values are unchangeable in the XP interface, from what I can see. Does anyone know why one drive would have one mode selected, and the other drive another? - Tim -- |
#2
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"Spammay Blockay" wrote in message ... I just installed a Hitachi Travelstar 7k60 as my secondary drive in my Thinkpad laptop, to go with the same model drive as my primary drive. I looked at the device properties for the new drive, and it was showing DMA Mode 2, whereas the primary drive was showing DMA Mode 5. These values are unchangeable in the XP interface, from what I can see. Does anyone know why one drive would have one mode selected, and the other drive another? - Tim Check with IBM - it may be that the secondary drive port only supports upto UDMA-33 (mode2), which is the mode CD drives operate at these days. It could even be as simple as the ribbon cable connecting the secondary port to the motherboard is 40 wire (max UDMA33) instead of the 80 wire needed for anything faster than mode 2.... |
#3
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In article ,
GTS wrote: "Spammay Blockay" wrote in message ... I just installed a Hitachi Travelstar 7k60 as my secondary drive in my Thinkpad laptop, to go with the same model drive as my primary drive. I looked at the device properties for the new drive, and it was showing DMA Mode 2, whereas the primary drive was showing DMA Mode 5. These values are unchangeable in the XP interface, from what I can see. Does anyone know why one drive would have one mode selected, and the other drive another? - Tim Check with IBM - it may be that the secondary drive port only supports upto UDMA-33 (mode2), which is the mode CD drives operate at these days. It could even be as simple as the ribbon cable connecting the secondary port to the motherboard is 40 wire (max UDMA33) instead of the 80 wire needed for anything faster than mode 2.... D'oh! I think that the new drive is in Primary Slave position, just as it says in the BIOS, and THAT is listed as UDMA-5, so I was completely off-base with this. The UDMA-2 device *IS* the CD drive! Thanks for pointing me in the right direction, tho'! - Tim -- |
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