Hard drive disappears after install of 10.4.3

Just upgraded from 10.2.7 to 10.4.3,
I have a powermac G4 with 4 hard drives (two 40gb and two 120gb). The two 40gb and one 120gb drives were recognized after the upgrade, but the other 120gb does not show up anywhere, including disk utility. All drives have been functioning properly prior to the upgrade. I also have one internal superdrive and one external DVD-R drive (both are recognized).
Any ideas appreciated...thanks in advance,
-Erik

if thats the case then it most likelyt is a hardware issue and not a problem with os 10.4 it might be worth your while to make sure though and find someone with a 10.2 or 10.3 disc an see if its listed in that setup, or you could check to see if that hardrive is visable in another computer that would at least rule out the possibility of the harddrive malfunctioning, but you may7 just also want to try another harddrive bay it could just be as simple as the serial cable being toast or at worst one of the buses being toast, but i believee your mac has four bays so definatly try that. and if worst comes to worst and none of these things seem to work then try calling apple.
i hope one of these things will help and give you insight on this issue, good luck!

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Hi wdmpfm,
Here is something from an earlier post on the -36 error that may help to identify the issue:
A -36 is a disc I/O error. You might have a corrupt file, or a corrupted drive. Try creating a new file and see if you still get the error. If you do, it might be wise to run a Disc Repair program to see if it can find any errors that it can fix.
And one from another thread:
You need to format your drive correctly. New drives come formatted for Windows, & then they seem to work — but not properly.
+Applications > Utilities > Disk Utility+
Choose one of the +Mac OS Extended+ formats.
Obviously first you will have to back-up all the data you have already put on the drive, because it will all be lost when you re-format.
Hope one of these may help!
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GB

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