IMac Blueberry changing Display resolution default settings

Hey everyone.... after a quick search I found this old archived post:
333 iMac OS 10.3.2 screen resolution?
Posted: Oct 4, 2005 3:50 PM
My mum is using an elderly 333 MHz iMac, tray-loading. She wanted to upgrade from system 8.6, so I updated the firmware, then installed OS 10.3.2 (10.4 won't run on a tray-loader). Under 8.6 she had the monitor resolution set to 640x480, as it effectively magnified everything for her aging eyes. Unfortunately, under 10.3.2 the 640x480 resolution seems only partially supported - I can set the monitor to that, but a reboot resets it to either 800x600 or 1024x768. Is there any way (a software patch?) that I can force it to reboot consistently with a 640x480 resolution?
Thanks,
Roy
I've basically got the same problem... I've got an iMac blueberry (slot-loading) and have sucessfully installed OS X 10.3 on it. The computer is for my grandpa who has a real hard time seeing... I think the zoom features would be confusing for him as his spatial awareness is also not great. The 640x480 is what I'd like to keep the resolution at however, upon rebooting the computer it goes back to its factory default. Any suggestions?
Thanks for the help!
~T

I will assume that you DO know how to use Terminal to change the default?
I'm fine in terminal... I just don't know which files to manipulate to change the default resolution. I can't find this information anywhere.
This would be of great help if you know this information.
Also, Universal Access settings have been used of course, however, "zoom" would be confusing for him, as noted in my previous post.
Thanks

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[email protected]
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Hello and Welcome to Apple Discussions.
Apple limited the graphics cards in iMac G4s to the native resolution of the built-in LCD i.e:
15" iMac G4 - 1024 x 768
17" iMac G4 - 1440 x 900
20" iMac G4 - 1680 x 1050.
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using an application called Screen Spanning Doctor. This is risky but I guess you haven't got much to lose at this point. I've only ever heard of one Mac user actually failing to do the process right though.
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cheers
mrtotes

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How about a testing with second Admin user account? Or, secure erase &
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Check to see if there is a weak or dead PRAM battery on logic board?
In your other similar thread, there were issues in replying to there based on
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