There's a jumper on the old drive that designates it as a slave. The
configuration is usually spelled out on the top of the drive.
I assume it's currently set as master-move it to the slave position.
Some models use the Cable Select (CS) position. If the old drive is set
to CS, change them both to this position.
There's a jumper photo here:
http://www.infohq.com/Computer/hd-jumper-pins-ribbon-cable.htm


Jim Cooley wrote:
> From: Jim Cooley  [log in to unmask]
> Subject: Slave HD Not found
>
> The C: drive on my IBM Aptiva with Windows 98 SE was a Quantum Big Foot.
> I installed a Seagate Barracuda 100 GB Ultra AT/100 according to instructions,
> intending to make the new Barracuda C: (master) and the old Big Foot D: (slave).  The installation program
> moved almost everything, the operating system, applications, data, etc. to the new disk.  (Seagate
> support had to tell me to give a sys C: command to install the system files).  Everything runs fine from the
> new disk.  However, it does not recognize the slave, i.e. the old Big Foot.
> I ran the computer with the slave detached, turned it off, re-attached the old Big Foot, and turned the computer
> on again.  It does not recognize the slave in the device manager or the system tools/storage/drives.  I also
> went through the control program/install new hardware and it does not find the Big Foot slave.
> The new disk came with a new ribbon cable which I installed.
> By the way, I had an old disk as a D: drive before this installation and it was working fine.
> I would appreciate any suggestions.
>
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