In message <20041020205531.GN1008@bcd.geek.com.au>, Daniel Carosone writes:
>Can't explain why it might happen exactly once per boot, but could it
>simply be the drive trying to remap sectors?  Does turning off
>write-cache prevent it, or at least cause it to stop on the second and
>subseqent times through (ie, once it's remapped successfuly)?

Nope.  Turns out to be DMA.  Modern CF cards may support DMA, the Net4801
supports DMA... But the wires for DMA aren't connected, because CF cards only
started supporting DMA recently.

-s