The owner had disabled the slave in device manager. Go figure.
So I bought this 250 GB Barracuda PATA HD, installed it, along with my previous maxtor 6y080L0 80 GB HD. Both jumpers were put in "cable-select", and my maxtor positioned as master.
Initially the pc booted up without BIOS recognizing any new drive, which was kinda surprising. I restarted into setup, ran the IDE diagnostics, and interestingly it only recognized Primary master drive, but no primary slave drive. I boot into windows, and under device manager, there is another drive in addition my old maxtor drive. I format and partition the drive in windows, and everything is set, it works great in WINDOWS ONLY. I boot backup, the BIOS still does not recognize the added drive, but windows continues to recognize the drive. So I am kinda perplexed.
I have an old Dimension 4600, with Intel Pent4 @ 2.8Hz, with windows xp sp2, and latest BIOS update.
Should I just get back in there, and change the "cable select" jumper settings to master and slave instead?