On Mar 4, 2009, at 5:30 PM, Will_i_am wrote:

> Each drive is connected separately to one of the two IDE
> plugs on the motherboard.  One shares this with the CD-ROM drive while
> the other doesn't share via its IDE cable.  Is this the correct
> configuration for two IDE drives?  Just wondering what is causing such
> intolerably slow (up to 1 minute or more) boot ups when the start up
> disk has been specifically selected under control panels.

One doesn't normally place hard drives on the optical bus, although  
the two Beige G3 buses are identical.

I used to manufacture a special dual drive HD bus cables (Apple never  
did). The lengths are rather special in order to avoid interference  
between the two drives.

The dual drive HD bus cable for the DT is quite different, and  
seemingly violates the length restrictions for IDE buses.

My cables were designed for and were tested at 33 MB/sec, although  
these are only operated at 16.67 MB/sec in a Beige G3.

On my production machines, I never encountered any slow-down problems  
as long as HDs were restricted to the HD bus and opticals and Zips  
were restricted to the optical/Zip bus.



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