> From: Terry Graham <[EMAIL PROTECTED]>
> Date: Sun, 8 Dec 2002 15:01:11 -0800
> 
> Edwin Morrow wrote:
>>> Should be able to add the new drive and keep the old one also.
>>> You will prolly need a sled to fasten it in. Not sure if there is an extra
>>> SCSI connector on the ribbon cable and the extra plug for 2nd drive.
>>> But there are plenty of experienced hands on this list to fill in the
>>> details ...
>>> Also make sure and get the SCSI ID #s and termination configured correctly.

Actually, Jerry wrote that ...


> I still don't know how to set the SCSI ID on this Quantum 4.5 GB>
> My 2 GB HD is of ID 'O' � my CD ROM is '3'
> 
Trying not to assume the obvious, nor chasten;
the Quantum does have 50 pins (and not 40) in the plastic box on one end ??
Also, how many connectors are on the SCSI ribbon cable ??

> 1.  If two identical HD ID's means trouble, and this 4.5 GB has no visible
> external setting (like external devices) why would I install, boot up, THEN
> go looking for its ID?

IF it has no external setting, that would be logical ... more likely it does
have some *jumpers* or pin sets some where.

> 2. How does one change the ID of a device that doesn't have external
> number settings

Does it have the sled or some sort of bracket attached, usually
over/protecting the exterior circuit board ??
If so, remove the sled/bracket, inspect the circuit board (CB) for some very
small pins sticking out of the CB. Will be in two rows, usually at least 3
deep, often more ... looks like this when looking down on them ��  : : :
Next to them, in the tiniest printing known, may be, A0 ... A1 ... A2,
If you see a fourth pair w/ * TE * next to it, all the better.
I use some 2.75 reading glasses.
These will determine the SCSI ID.

When you find them, you will need *jumper(s)* to set the ID to anything
other than 0. No jumper(s) across A0, A1, or A2 is ID 0

> or do some devices have fixed numbers?

Not that I know of, but quite possibly, SCSI being SCSI ...

> Is it done via the HD setup?

No.
 
> 3. Can I unplug my only and active 2 GB HD, move it to the bay below it
> (I know about the sleds) and install the 'thicker' 4.5 in its place without
> any special termination or ID moves or other assorted troubles?
 
Some considerations ... the *thicker* 4.5 drive may be an older drive, and
may run hotter. Air circulation ...
Does machine (which model is it ???) have a CD drive ?
Will the 2 HDs and CD be on one cable ?
If so, the drive that is on the connector, furthest from the logic board,
must be terminated.
The other drive(s) on that cable should not be terminated ...

> On the end of the 4.5 HD that's opposite the SCSI plug,
> there is a small, white plastic, 12-pin plug recepticle???
 
Usual a small ribbon cable from inside the housing plugged there, but beyond
my knowledge.

> 4.  Is the cuda button only used for the installation of PCI Cards especially
> CPU upgrades?

There are other reasons for its use. Seems a good procedure any time you
add/subtract to/from the logic board.

HTH ... Jerry


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