EMac Problem - Won't recognize HD

I have gottem my eMac to boot up with the eMac install disk. Want to run Disk Utility but there is no HD to select! Ran Apple Hardware test and everything passed. When booting there is a subtle clicking in the back of machine that repeats itself and the machine will not boot up into OSX. If it's not a hardware problem according to AHT how can I get DU to find the HD so I can fix it?
help.
Thanks,
JB

I ran into a problem with memory faults that Apple Hardware Check didn't catch. So there is precedent for Apple diagnostics not catching everything that could be wrong.
I've had hard-drives fail on laptops; the clicking noise is fairly typical of a hard-drive failure.
Try installing OSX onto a fire-wire drive and using that as your boot disk. You don't need to re-partition it if you already have a firewire drive for backup; just install OSX. Then use the system profiler to see if the internal hard drive is recognized by the computer.
Replacing the hard-drive in an eMac is not a job for novices. If you're used to working on computers and are very patient with small fiddly wires and screws, then there are good reference materials on the internet to guide you through it. The power-switch, for example, is needlessly fragile so be very careful when lifting the plastic shell off the eMac. Be aware that the CRT in an eMac contains lethal voltages if not discharged properly. There are also internet resources on how to do this. I don't have the links handy, but you can search "eMac dis-assembly" as I did to find them.
The folks who make Drive Genius also make a data-recovery program that I've heard good things about, but not used personally. Hopefully you have a current backup of your data....
Good luck!

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EMac Problem - Won't recognize HD

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