Go Back   MacRumors Forums > Apple Hardware > PowerPC Macs

Thread Tools Search this Thread Display Modes
Old Oct 30, 2007, 02:15 PM   #1
macrumors regular
Join Date: Sep 2007
imac G3/333 memory HELP!

Hey guys quick question. I have a G3/333 here and I have plenty of HP Omnibook memory in my hands. They both appear to use the same spec memory and I was wondering if I can use the HP memory in the imac?

Imac Spec: 128MB, 144-pin SODIMM, SDRAM, PC133 memory module
HP Spec: 256MB, 144-pin SODIMM, SDRAM, PC133 memory module

On the face of it, it would seem YES! But the price difference on Crucial.com is way different. Imac is 2 x the price on their site. Am I missing something?

I want to know before I crack open the imac. Screwdriver in hand awaiting response lol.

Im a PC guy and this is the first time I am even opening up a MAC and am pretty excited about it.
WILLDOGS is offline   0 Reply With Quote
Old Oct 30, 2007, 03:07 PM   #2
Thread Starter
macrumors regular
Join Date: Sep 2007

So I've got the 512mb (2x256mb)memory in and upgraded this G3 to a 40 HDD.

Now, my question is, how do I get this dame OS-X Panther Installed?

I am booting off the CD, but it just sits there with the apple logo and a spinning circle at the bottom forever.

Trust me I have been researching this for the past few days and am a PC Engineer professionally and have the basic knowledge of Hardware/software but this is my first venture into the Mac world.

I am at my wits end with trying to get OSX on this and wanted someone to lead me in the right direction if possible.

In my research I have seen something about having to Upgrade the firmware and possibly partitioning the HDD and only installing OS X on the first 8GB partition.

How can I go about doing these two items without an OS? Is there a BIOS on these things? To upgrade the firmware? If so how can I get into it?
Also is there is method to "fdisk" (sorry for the lack of a better term ) in order to partition?

Thanks ahead of time. I really want to become a MAC convert and I am trying to take the cheaper route for now before buying a MBP

So far:
G3/333 = Free
OS X 10.3 = $25 from someone on craigslist (5 license pack)
Memory = Free
HDD = Free

I think i'm doing good so far
WILLDOGS is offline   0 Reply With Quote
Old Oct 31, 2007, 01:05 PM   #3
Thread Starter
macrumors regular
Join Date: Sep 2007

I know its an old machine and God forbid anyone would even touch one. But I can still use a bit of help.

WILLDOGS is offline   0 Reply With Quote
Old Oct 31, 2007, 04:16 PM   #4
macrumors 6502a
Join Date: Sep 2007
Is this your only Mac?

I installed the ROM upgrades from OS 9 - since the machine I got (G3/400 slot load) was OS9 only I really doubted it had been done.

Then I hooked up another mac and ran the installer using Firewire Target Disk Mode.

How much memory is in it now?

Panther still came on CDs, huh?
ADent is offline   0 Reply With Quote
Old Oct 31, 2007, 04:31 PM   #5
macrumors 6502a
Join Date: Jan 2007
Send a message via AIM to Luigi239
Yeah, the memory should work. The worst thing that can happen will be the ram doesn't fit. You should be fine there. Be careful opening up the case however, the Tray Loading iMacs are a pain in the ass to open up and fool around with. (Took me an hour to put mine back together the first time, couldn't get the CD drive to sit correctly.)

Second, regarding your OS X issue, it is possible that your firmware is not up to date. You will need to have a copy of OS 8 or 9 that you can install it with. (If you don't have a copy on hand, you could always borrow one from a friend, or ebay.) Once you have the OS 9 installed, go to this website:


And download the new firmware and install it. Before you go through the whole OS 9 process though, I believe there is a way to check the firmware revision using Open Firmware. (The equivalent of a Mac's bios.) Let me go look that up, and if I find anything, I'll post it.

Good luck.

EDIT: Found it. You need to turn on your iMac while holding down command-option-o-f. The first line of the output is the firmware version. Yours should read something like this if it up to date:

Apple iMac Open Firmware 3.0 f2 built on 04/23/99 at 14:31:03

Last edited by Luigi239; Oct 31, 2007 at 04:39 PM.
Luigi239 is offline   0 Reply With Quote
Old Oct 31, 2007, 05:20 PM   #6
Thread Starter
macrumors regular
Join Date: Sep 2007
Thanks so much Luigi! As soon as I get home i will try this out. I also need to get my hands on a copy of OS9 somehow. I will check craiglsist or ebay perhaps.

I was able to upgrade the RAM to 512mb and Hard Drive to 40Gig.
WILLDOGS is offline   0 Reply With Quote

MacRumors Forums > Apple Hardware > PowerPC Macs

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
2011 iMac memory used in 2013 iMac? Eduardot iMac 8 May 7, 2014 03:32 PM
New iMac memory... dilgit iMac 1 Sep 26, 2013 01:32 AM
333's - Latest dice game for iPhone now on the App store coppermobile iPhone and iPod touch Apps 0 May 22, 2013 11:46 AM
iMac memory Stevies3 iMac 1 Feb 2, 2013 06:17 PM

Forum Jump

All times are GMT -5. The time now is 06:24 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2015, MacRumors.com, LLC