Jaymon said:
On the contrary, the most compelling reason would be that most new HD's
use
UDMA 5 mode (primary IDE channel) and CD/DVD ROM/RW's use UDMA 2 mode
(secondary IDE channel) If you mix HD's and CD/DVD devices on the same
channel you are more apt to have conflicts between devices on another
channel..It is a better idea to keep HD's on the primary channel
master/slave
or computer select and likewise for CD/DVD on the secondary channel, which
in
turn creates less conflict and confusion for the OS...
j;-j
Jaymon:
Jaymon:
Mr. Currie is most certainly correct. In another thread you basically
repeated what you're stating now. It was incorrect then; it's incorrect now.
As I stated in my reply to your posting in the other thread...
With relatively modern motherboards & components the Primary IDE channel can
be used to connect *any* IDE/ATAPI device whatsoever without any performance
issue being raised. There's *no* reason why an optical drive cannot be
connected to the Slave position on the Primary IDE channel. It will not
affect its performance one iota. If, for some reason, the physical layout of
the motherboard makes it more convenient to connect an optical drive to the
Primary Slave position, there's no harm in doing so. And similarly, there's
no problem performance-wise if a secondary HD is connected anywhere on the
Secondary IDE channel. Years & years ago, there *could be* a performance
issue with these type of connections, but that time has long since past.
It *is* true that all things considered, it's always (or nearly always) best
to connect the booting HD to the Primary Master position. But this is only
because some motherboards (a very few) do have a problem when the bootable
drive is located on a position other than PM. But it's probably a moot
point, since you would be hard-pressed to find a booting HD that's connected
to a position *other" than the PM one.
The ULTRA-5 mode is available on *both* IDE channels. Other than the booting
HD being normally connected to the Primary Master position as noted above,
there are *no* compelling reasons to connect hard drives on the primary IDE
channel and optical drives on the secondary IDE channel. There will *not* be
more "conflict and confusion for the OS" nor will there be any performance
degradation should a HD be connected on the secondary IDE channel and an
optical drive on the primary IDE channel.
Anna