dual drive

[Corbett Battaile]

Let me start by saying that my answer is in no way authoritative, and you 
might know all this already, so please forgive the self-indulgent IDE 
tutorial if so. Plus, I don't have a copy of the YDL 3.0.1 guide, and my 
4.0 guide is at work. (Today's a holiday for most folks here in the "good" 
"old" US of A.)

But I suspect that the confusion stems from how one defines "first" and 
"second" on an IDE chain, and also whether one jumpers Masters and Slaves 
explicitly or uses Cable Select to define the Master and Slave. The 
important point, it appears, is that YDL should reside on the Master drive.

So, that means that YDL should be installed on the drive FARTHEST from the 
motherboard (the Master), and MacOS on the drive CLOSEST to the motherboard 
(the Slave). Like this:

     = ______________________=________=
    | |                     | |      | |
    | |         IDE         | |      | |
    | |        CABLE        | |      | |
    | |_____________________| |______| |
     =                       =        =
Motherboard                MacOS     YDL
    End                    Drive    Drive
                          (Slave)  (Master)

Now, regarding jumpers, there are two ways to do it. One, you could jumper 
both drives with the Cable Select (CS) option. (Assuming your drives 
support it - most newer ones do.) That sets the drive farthest from the 
motherboard as the master, and the one closest as the slave. Or, you could 
explicitly jumper the farthest drive as Master and the closest as Slave. 
(Some drives have different jumper settings for "Master with no Slave" and 
"Master with Slave present," so look out for that.) Regardless, the Master 
always has to be at the end of the cable (farthest from the motherboard) 
and the Slave at the middle of the cable.

Many drives have jumpering diagrams on the label, and also have little 
markings on the plastic next to the jumper pins. (Usually MS = Master, DS 
or SL = Slave, CS = Cable Select.) Also, you might check out 
<www.pc-disk.de> for jumper settings and other useful info on lots and lots 
of different drives, or visit the drive manufacturer's support site.

Hope that helps!


--On 11/25/04 1:58 PM +0100 harald ornstein wrote:
>
> In the companion to installing YDL 3.0.1, page 2, they write: If you are
> installing YDL on a second drive it is advised that the YDL drive be
> placed second and jumpered as master. The Mac OS drive should then be
> placed first  on the IDE chain and jumpered as slave.
>
> In the same chapter of the companion YDL 4.0 there is said that the YDL
> drive must be placed first as master and the Mac OS on the second.
> Nothing about the jumper!
>
> Has the difference to do with 3.0.1 and 4.0 ?
>
> Can anybody tell me what is the right place for the drives and how they
> should be jumpered.
>
> Thanks in advance
>
> H. Ornstein




--
Corbett Battaile