iBook Crash - Hard Drive? OS?



My iBook - the model before current G4....was making a noise yesterday then bam.Grey screen - flashing question mark.
Have reset the PRAM - and now have the chime sound back - but it won't start up.
Have tried to reach first aid from the install CD- and can get that far - and highlight the hard-drive icon - showing 28 gig - but then the repair button won't highlight - so can't press it.
I'm wondering if it could be an index prob?
Also, I can get up the initial blue screen with the icons - reload - cd - and arrow - and there is also supposed to be a HD icon there - but there is not - so it seems to be unable to detect the HD - but the first aid from the installation CD - shows it as being there.

Oh - also ran extended hardware test from CD - and it came up with "mass storage device - not detected"

Please Help - I am desperate!


Oops, sorry. Didn't mean to do two thread - can the inital one be deleted please? This is the more correct version.

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