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All replies
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Helpful answers
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Apr 6, 2015 10:21 AM in response to nunotunaby BDAqua,Hi, I don't know how fast it shuts down, but...
How to reset the SMU/PMU on a Power Mac earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/ht1379
In fact, do 3 in a row, takes a bit of time.
Does it boot into Open Firmware with CMD+Option+o+f ?
http://docs.info.apple.com/article.html?artnum=42642
reset-nvram (press Enter)
set-defaults (press Enter)
reset-all (press Enter)
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Apr 6, 2015 10:35 AM in response to BDAquaby nunotuna,Hi BDAqua.
Thanks for the quick reply. I did try to reset the PRAM with no results whatsoever. I installed Leopard remotely from my imac last night having the G4 as target disk and it continues not recognizing the assigned system disk. I guess it's because the installation adapted to the host iMac parameters and not to the G4's.
I will try all those commands you're suggesting tonight and get back to you.
Thanks again!
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Apr 6, 2015 11:33 AM in response to nunotunaby BDAqua,Is the iMac Intel or PPC?
An IntelMac would install a non workable, non bootable version.
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Apr 6, 2015 12:35 PM in response to BDAquaby nunotuna,This what I've tried:
iMac 2.66 Intel Core 2 Duo ----> Mac OSX Leopard 10.5 Install DVD ---> PPC G4 (target mode)
I successfully installed it but when I tried to turn the G4 it fired up and shut down immediately after. Now it just lights up the start up button and has no reaction whatsoever. Like when you start up a car and it has no battery.
I've been working with Macs since early nineties and I got used to solve my own software and hardware problems but I'm getting desperate with this one because I've tried all the "tricks" I know unsuccessfuly.
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Apr 6, 2015 12:56 PM in response to nunotunaby BDAqua,OK, we need to do it the other way, put the Install Disc in the iMac, boot the iMac in target mode, ( this will make the iMac a big Firewire Optical drive), then try booting the G4 holding the alt key or option key to select the Install Disc to boot from.
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Apr 6, 2015 12:57 PM in response to nunotunaby BDAqua,Oh, that's assuming the 10.5 Install Disc is a Retail one & not a gray machine specific version.
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Apr 6, 2015 1:13 PM in response to nunotunaby BDAqua,Ah, one other thing, it may have reformatted the drive to GUID Partition scheme, which IntelMacs need but PPC Macs can only boot from APM partition scheme, so reformat may be needed.
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Apr 6, 2015 7:08 PM in response to BDAquaby nunotuna,I will do that and will get back to you in a couple days.
Thanks BDAqua!
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Apr 6, 2015 8:45 PM in response to nunotunaby BDAqua,OK, I think we''re on course to resolution of this!
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Apr 9, 2015 8:12 AM in response to nunotunaby Limnos,nunotuna wrote:
Like when you start up a car and it has no battery.
How old is the PRAM battery? It could be corrupting PRAM if it is weak.
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Apr 12, 2015 1:32 PM in response to BDAquaby nunotuna,Hi, BdAqua!
My G4 started powering up again, finally. I tried everything you said. Formatted a pen with the OS with the Apple formatting thingy (not GUID) connected both imac and G4 through Firewire cable, started my iMac on target mode and then the G4 pressing the ALT key. A select drive screen appears with the two deficiently formatted G4's HDs but the System Pen didn't appear on that screen.
There's still a chance of pulling out one of the G4's HD, put it on an external drive deck, format it and install the system.
@Limnos was suggesting the problem could be the PRAM motherboard battery being depleted. That's possible, I will have to check it with a friend and will get back to you both.
Cheers!
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Apr 12, 2015 1:34 PM in response to Limnosby nunotuna,HI Limnos!
Check the reply to BDAqua.
Yes. Might be the PRAM battery. I'll try to buy one tomorrow and I'll get back to you both.
Cheers!
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Apr 12, 2015 2:15 PM in response to nunotunaby BDAqua,Target mode will only help with aG4 Install DVD in the iMac, or a partition on the iMac's internal drive that has a clone of the G4 Install Disc on it... USB won't work.
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Apr 12, 2015 2:23 PM in response to BDAquaby nunotuna,So you're saying it would work just by "targetting" with the install disc itself? Geez. Where did I get the idea of using a pen? I've read so many forum threads I mixed up everything!
Be back in about two hours give or take.