I am also a Dell Owner and recently installed an IDE in addition to my Serial ATA. I began receiving a similar error but only after powering off the machine. A restart would go cleanly so it appeared sporadic. You will probably be able to duplicate this after a complete shutdown.
Anyway, I will make a couple assumptions.
1) You are installing a Serial ATA in addition to your Primary IDE Hard Drive.
Here is how I believe I resolved my issue.
Go into Bios - Press F2 for setup.
Serial ATA will probably say say Yes - Press the Space Bar and turn it Off.
You should see the Bios request status for two ATA drives. Under your Serial ATA Drive 1 - set it to Auto ( so that it will autodetect on bootup.)
After rebooting, you should get a message 'new hardware found'
Shutdown and reboot the system. Your F1/F2 to continue error should go away because you are forcing your system to recognize the hard drive in question and not confuse it with other.
If this still doesn't work, a slightly riskier steup would be to set your Primary IDE Drive in Bios to Auto and make sure all Other IDE Drives (Primary/Secondary) are set to OFF.
Here is a link from Western Digital to look at for checking your jumper settings on your primary IDE drive.
Best Wishes on resolving this. I hope I helped a little.
I have a Dell Dimension 4600 purchaed 1 1/2 years ago. About 2-3 weeks ago, I installsed a 200 GB Maxtor 7200 ATA 133 in the machine in addition to the 40GB original drive.
A week later, the system acted funny by making a sound (HD) and giving me the follwoing message:
Primary drive 0 not found, strike the F1 key to continue, F2 key to run the setup utility. The following morning the system worked fine. A couple of days ago it came up with the message but it did not work in the morning. I moved the controller wires around but no luck.
Any idea how I can get my machine working? At this time I will be happy with having access to my original drive!! Thanks