Installing OS 9.2 AFTER 10.3 has been installed. Possible?

I recently bought an Apple Mac G4 as a christmas present for my dad. (i'm a pc guy, last time I gave him my old pc he nuked it, viruses etc)

After I got it I promptly wiped the hard drive, installed OS X and installed a few programs. (Firefox, Skype etc)

However, i've realised that at some point when he uses it he may want to use OS 9 programs. However, OS 9 isn't available in OS X. (I realised I should have installed 10 on top of 9 instead of wiping the partition)

Anyway, I have the problem that OS 9 won't install to the hard drive (unless I opt to do a clean install) and I can't copy the System Folder verbatim from the cd because it complains about it when I try starting classic in OS X.

At the moment my only thought is to either wipe the hard disk and start from scratch or buy a cheap second hard disk and install OS 9 to that.

Does anyone have any other/better ideas?
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Clean Install won't erase and format your HD.  So I think it's save to do that.  Afterall, you've wiped out your hard drive.  As far as I know, with clean install, if it found another os9 or classic os, it will archive it, and install a brand new (clean) OS.  It won't touch OSX.

Good luck.

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I believe that Apple was stopping people from installing os 9 after they install os 10.3. At this point, if it isn't critical that you lose some of your os 10.3 files, then do a clean install of os 9. (you might have to install os x back again afterwards)
MarkCCAuthor Commented:
Selecting a clean install installed OS 9 inside 10 fine.
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