I can confirm that on current Edgy Eft CD Install, the JMicron IDE
controller works. I can boot off CD, and read/write to an IDE HD. I am
Using an ASUS P5B-E Motherboard.

However as of 2006-12-19 the JMicron controller detects the UDMA/100
drive as UDMA/33.

> hdparm -i reports
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5

> hdparm -I reports.
Capabilities:
        DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4 udma5
             Cycle time: min=120ns recommended=120ns
        PIO: pio0 pio1 pio2 pio3 pio4
             Cycle time: no flow control=240ns  IORDY flow control=120ns

-- 
JMicron PATA/SATA Controller does not work
https://launchpad.net/bugs/57502

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