They have no problem "differentiating" between devices, as in, 
they work--but the Master drive is what prefaces any speed 
transfer protocols.  I was talking about making the optical 
drive the MASTER, and a HD the slave, that's what's not good. 
Unless of course as I stated if the optical drive is UDMA33 and 
your HD is also an old UDMA33.  That's not as bad, but I still 
don't recommend it because the UDMA33 on an optical device (or 
whatever its rating) is absolute maximum theoretical xfer rate. 
It's the same for the HD, but that actual rate you achieve in 
actual use is going to be faster for the HD.
-Clint

God Bless
Clint Hamilton, Owner
http://OrpheusComputing.com

----- Original Message ----- 
From: "Hugh Vandervoort"

This is no longer true in modern computers.
My Guru says: "Here is your definitive answer. Modern 
controllers have no
problem differentiating between devices in the same channel. 
Putting a
slower optical device on the slave channel of a Ultra 100 
device makes no
difference in the individual performance curve of either 
device.

However, if you were to copy from say your hard drive, to your 
burner, then
you would be better off putting the hard drive, and the burner 
on separate
channels, of the same controller, so that that data could be 
read, and
written simultaneously.
****************************************************************************
***********************************
> No, not good.  Your HD's should ALWAYS be the Master.  Not 
> doing so
> 'can' slow them down a lot.

Ok, thanks Clint but speed is not important. This hard drive is 
bad and I am

just attempting to get a few files off of it. I was just 
curious if it would

work paired with a CD ROM.
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