Extra beeping on bootup

I put together a used system from some parts. My Primary Drive 0 is 10 GB, Primary Drive 1 is 6 GB.

I also have a floppy and a CD Burner. When I boot up it's beeping with a Secondary Hard Disk Drive 1 not found error message.

All the drives work fine.

I don't know if I have the cable hooked up wrong, wrong order, or who knows what.

It's a modified Dell Optiplex 110. Does anyone have any ideas what's wrong?

Thanks,
Andy