iMac G3 Operating System

Hi, I'm not sure where to post this, but, here seemed like a good idea.

I just bought an iMac G3 at a grage sale, and it works, except that it needs the operating system reinstalled. I'm trying to see if the owner still has the neccessary CDs, but it seems worth it to purchase the latest. Will this work? I only ask because this is my first apple computer. THanks in advance.

Posted on Oct 8, 2005 3:09 PM

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14 replies

Oct 8, 2005 3:30 PM in response to Ian Garrett

Ian, welcome to the world of Mac! It would be necessary to determine if the iMac is a slot-loading model or a tray-loading one (the CD or DV Rom drive). If a tray-loading model you could install Mac OS X (10.3.x) and if a slot-loading model you could install Mac OS X (10.4.x) but if the slot-loader does not have a DV ROM drive you would have to exchange the Tiger (Mac OS X 10.4) Install DVD for the CD set via the Media Exchange Program. For Tiger you also need a model with FireWire ports, 256 MB RAM minimum, 3 GB free hard drive space. The requirements for Panther are here.

Oct 9, 2005 8:30 AM in response to Ian Garrett

Well, I'm not sure if I can update anything, because when I turn it on, I get a grey screen with a folder flashing with a question mark and a little face. And I don't think the previous owner can find anything that might have come with it when she bought it.

And this is gonna be a stupid question, but, is it possible to change out the processor? I was hoping to but at least a G4 in, since I bought it for music production.

Thanks

Oct 9, 2005 10:30 AM in response to Ian Garrett

Hi Ian, Here is a general link that you may find helpful: http://docs.info.apple.com/article.html?artnum=58669 The OS listings are, I believe, outdated.

I have a imac g3 DV (400 Mhz) that can run the latest Tiger with no problems (a little slow but faster than I would have thought). What color is the iMac? Compare with the chart in above link. That will go a long way to identifing the model of slot-loading iMac.

Oct 9, 2005 3:57 PM in response to Ian Garrett

First, looks like you have a Graphite iMac. Second, since the iMac starts up and looks for an OS, the basic hardware is working. Now, it just needs that OS! Tiger is a possibility. See this page for compatibility: http://www.apple.com/macosx/upgrade/requirements.html You should have no problem running Tiger on this iMac if it has enough RAM, but you may need to order a CD (not DVD) if the mac is in deed of the CD-RW variety. You will need to purchase the Tiger DVD and send to Apple a printed copy of the "Tiger Media Exchange" form http://images.apple.com/macosx/pdf/tigermediaexchangev3.pdf along with the DVD. They will send you a CD version. If you live near an Apple store, you should ask the folks there what your options are and they may be able to tell you if the mac has a DVD drive. Regardless, if you purchase Tiger, try the DVD and if it is recognized by the iMac, you are good to go! If not recognized, then exchange for CD.

Oct 9, 2005 6:17 PM in response to Ian Garrett

Ian Garrett...

I would hate to see the thing messed up because of firmware issues. It also affects what Mac OS will be needed at first to install the Firmware Update should it be necessary.

The best way is to check that is to boot the computer up into Open Firmware by the instructions below. Once it displays we need the Open Firmware version and the date. Just post back the info for further assistance. ...Ron

http://docs.info.apple.com/article.html?artnum=30575

BTW... Command is the key with the Apple/fanlike icon on it.

Oct 9, 2005 7:43 PM in response to Ron JACKLE

Sorry for next question, but it may be relevant to topic: If you acquire an older (G3) iMac and it has no hard drive at all, you must connect it to a hard drive (can't be a CD) to get the firmware updated? You can, ofcourse, start up in Open Firmware mode without a HD to check what firmware version is on the machine. Last, it seems strange to me that Apple does not note this on the OSX upgrade page http://www.apple.com/macosx/upgrade/requirements.html. Just a warning to check if firmware is up-to-date. Seems like this is as important as hardware compatibility, that is if you have a questionable or non-functioning HD.

Oct 10, 2005 5:37 PM in response to Ian Garrett

Here is a link to some good general info on upgrading a 2001 iMac: http://db.tidbits.com/getbits.acgi?tbart=07978. Note that this was published in Feb 2005 and refers to a Panther upgrade, but should still be relevant if you want to go for Tiger. Note also that the article cautions you regarding the firmware update: http://db.tidbits.com/getbits.acgi?tbart=06973. Hope this is helpful.

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iMac G3 Operating System

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