Question about Apple iMac G5 Desktop

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Imac g5 i have recently purchased a second hand g5 which is working great appart from when i put in a dvd.a window appears and asks for my password.i have spoken to previous owner and thre are no passwords stored  any ideas thanks

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Re: imac g5

Seens to be a ownership issue due to
because all non mac native will be terated as a atemp to read , write or copy file tha are not OSX file system

Posted on Dec 06, 2007

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Re: imac g5

HI, read through this Apple artice, I hope it helps. Please rate if useful, thanks!

Posted on Dec 02, 2007

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1 Answer

I need to unlock a iMac running OS 10.6.1

Step 1:

Turn off your iMac G5

Step 2:

Power it back on. Right when you hear the startup sound, hold down Command and S together. This will bring up a black and white terminal prompt.

Step 3:

If at this point, it asks for a password (firmware password), power back down the iMac, change the amount of RAM (remove one stick of RAM and leave the other in), turn the computer back on and when you hear the start up sound hold down Command + Option + P + R. Keep holding until it restarts again. Once it restarts again, let it boot up, then shut it down again and put the stick of RAM back in. This will reset the firmware password and should allow you to continue onto the next step.

Step 4:

Once you are successfully at the command prompt, type the following commands, pressing enter after each line.

mount -uw /
rm /var/db/.AppleSetupDone
shutdown -h now

Step 5:

That's it! Once you boot back up, you should have a brand new administrator account that you can use to access all files and remove other accounts.

Dec 25, 2012 | Apple iMac G5 Desktop

1 Answer

Replace iMac g5 20 hard drive

Hi John
Try reinstalling via your macbook pro but this way round.Put the Leopard Disk into the Macbook and then start the Macbook in Target mode.on the iMac start it up and hold down the Option (or Alt) key then wait.after a short while you will be offered the HD in the MacBook and the DVD. Choose the DVD and see what happens.
What happens when you do it the other war arounds is that you are installing a startup system for the MacBook onto the HD of the G5 and not the system for the G5. The installer uses the firmware of the motherboard that is running the install to select the correct version.
Another issue is that the disk formatting may be wrong. it's unlikely seeing that you used disk utility from the DVD, but it is possible.
Let us know how you get on.

May 03, 2012 | Apple iMac G5 Desktop

1 Answer


The issue you are having is one in Intel, the other is G3.
This is how to do it. 1. put the cd/dvd into the laptop and restart the laptop in Target mode.
2. connect the laptop to the iMac with a Firewire cable.
3. Start the imac and immediatle hold down the alt/option key.
4. after a moment you will be offered a choice of start-up discs - one of which will be the CD/dvd in the laptop.
5. Start from the CD and then when asked, select the iMac drive as the destination. This ensures that the imac loads the correct version of the OS for its processor. Should work without a hitch.

Mar 03, 2012 | Apple iMac G5 Desktop

1 Answer

Forgot imac password

Start the imac from an install DVD and use the rest password option.

Jan 23, 2012 | Apple iMac G5 Desktop

1 Answer

G5 keeps powering up for a few mins then switches off?

Thank you for contacting Fixya Support, I am glad to assist.

There are a few steps you can try to troubleshoot this issue:

Try a PMU Reset:
* Turn of your iMac if it is already turned off
* Disconnect all connections to the iMac except the power cord
* Now disconnect the power cord for approximately 20 seconds
* Reconnect just the power cable the keyboard, mouse and power cord, and then power your iMac G5 up.

* Check to see if the iMac boots up normally without power interruption.

* If the iMac G5 shuts off again, try these steps, another recommendation would be to remove all connections including the power cord, and lay the iMac G5 on soft cloth face down and with a philips screwdriver, remove the plate on the bottom of the iMac G5 where your RAM memory is located.
Before removing the RAM however, touch your hand on the metal boot to discharge any static current you carry for approximately 5 seconds.

Now remove each RAM card and then reseat (re-install) each card.

Restore the RAM card cover with your Philips screwdriver, reconnect your power cable, keyboard an
d mouse and turn on your iMac G5.

See if this second procedure helps if the first procedure does not work.

Let me know if this helps.



Sep 11, 2010 | Apple iMac G5 Desktop

1 Answer

My computer is running very slow. and safari keeps asking for my password. i'm not that computer literate, so simpler language would be greatly appreciated. thanks much.

The computer will slowed because you have installed many of softwares in it. Remove applications from startup. Install a good licensed antivirus in it. Use Google chrome for better surfing.

Jul 25, 2010 | Apple iMac G5 Desktop

1 Answer

PowerMac G5 doesn't eject

Your DVD wont show on the desktop unless a DVD is inserted. Which means that the DVD is either upside down, or simply isn't recognized by the reader. There should be an eject button on your keyboard. Hold that for 3 to 5 seconds and see if it ejects. If not, look for a tiny hole in the front of your case and insert a paper clip and push in until the DVD ejects. Some Macs have no hole and require a shop to extract the DVD for you. Another trick is to start up the PC while holding down the C key during bootup, which will make the PC try to boot off of the DVD. At which point the DVD should eject as the system asks for a proper boot cd.

Feb 28, 2010 | Apple iMac G5 Desktop

1 Answer

Connecting external microphone to imac g5

Get yourself a great little gadget called iMic. It's a usb connector that adapts to let you used your headset mic and the mac system os will recognize it very well. Works good .
Costs about 24 bucks or so..

Jun 19, 2009 | Apple iMac G5 Power Supply 661-3351

1 Answer

Imac g5 model:a1058

iMac G5's cannot run windows alone, but older software can be purchased like Virtual PC to run windows on that unit.

Aug 05, 2008 | Apple iMac G5 Desktop

1 Answer

Airport Extreme 802.11g

At this point you are much better off installing a USB wireless antennae than spending money on an Airport card, cracking open the iMac, and installing it.

USB wireless adapters are cheap, plentiful, and have more capabilities than the generation of Airport cards that were made for G5 iMacs.

Apr 14, 2008 | Apple iMac G5 Desktop

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