Powermac g5 will not boot---hard disk appears not to mount

tried resetting smu, nvram
tried disk util---does not see drive(orig. 160 gb)
tried new disk---not recognized either
boots to OF ok
i'm running out of patience and have no money to take it to apple
would greatly appreciate any input/advice--thanks

Dear Fryan,
Welcome to Apple Discussions.
The HDD is not mounting and there could be lot of reasons for this malfunction.
What you can try is :
1.Open the unit and reseat the HDD cable.
2.Re-pair the RAM .(re-arrange)
3.Do PMU/SMU reset.
4.Try to boot holding the "option" key. You will see the HDD icon if you do not see the HDD icon that means the boot rom is failing to rcognize your HDD. This could be a Logic Board faliure or a HDD faliure (but lets not assume things so fast
If you do see the HDD icon then click on it and then click on the right arrow.
5.If the previous step fail try to boot to the install disk holding the c key or the same procedure usin option key.
6.If it is able to boot to install disk thank god that your logic board is safe.
7.Your install disk has an Apple Hardware Test included you will have to boot it holding the option key and choose AHT to boot to AHT and run the test.
(Addtional testing steps)
1.IF you happen to have another MAc then you can connect the affectd Mac to a known good Mac via firewire cable and boot the affected mac with the HDD of the good MAc by holding the option key and starting the good mac with T key.
Also you can do the reverse step to chekc the HDD of the Affected mac.This procedure is called target disk mode.
Tell me how far you are able to go.
Hopw this helps.
Good Day!
Ravi Dimri.

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