2.0.37pre4 is more cautious about setting certain IDE options
> PIIX3: not 100ative mode: will probe irqslater
> ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
> ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio
>
> Dec 29 20:14:11 jim kernel: hda: WDC AC38400L, ATA DISK drive
> Dec 29 20:14:11 jim kernel: hdc: QUANTUM BIGFOOT_CY4320A, ATA DISK drive
Do all kernels report the drives as DMA ?
> Anyone else have any problems with similar drive/controller combinations
> under 2.0.37pre4 with the new IDE code?
See if using hdparm to turn on multisector speeds it back up
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