On Oct 5, 2008, at 12:42 PM, Dana Collins wrote:

> On a slightly separate note, I am guessing that it's a good idea to
> unplug/disable any drive attached to a PCI controller card, yes?

You can unplug/unpower the slave, but not the master.

Although master and slave are really "peers" of each other, an IDE/ 
ATA bus/cable may have zero, one or two drives, but if only one drive  
then it must be master, and if two drives then either one may be  
master, but the other must be slave. (It is only by convention, not  
by technical requirement, that the end drive is master).

Pulling the power plug of the slave drive is usually enough as the  
drive itself presents so small a load on the bus. 

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