For PATA the requirements I'm aware of are
- Interface for user to say "am about to swap"
- Interface for user to say "have swapped"
- Must quiesce both master and slave before swap (or one per cable)
- Must reset to PIO_SLOW and then recompute modes for both devices
becuse it is possible that changing one changes the other timings
- The above is true for *unplug* too. A straight unplug may speed up the
other drive!
- Post hotswap need to reconfigure both drives as if from scratch
-
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