Trying to Install OS X 10.3 on iMac G3 but its Password Locked.

There is a likelihood the grey install-restore disc set may not

be for iMac G3 500GHz model you have. However the reason

why the disc media rejects insertion of a disc before trying to

read is also a possible issue; this may be of most importance

As there is information on the grey system media, that pertains

to the intended model and build year specifically; could you read

that and enter it into your posted thread?

Your model identifies with in specs as iMac (Summer 2001) and

there is more information from MacTracker.ca information app:

Introduced July 2001

•Discontinued January 2002 (700 MHz), March 2003 (500, 600 MHz)

Model Identifier PowerMac4,1

Model Number M5521

EMC 1857

Order Number M8582LL/A (500MHz Indigo), M8490LL/A (500 MHz Snow), M8492LL/A (600 MHz Graphite), M8546LL/A (600 MHz Snow), M8510LL/A (700 MHz Graphite), M8554LL/A (700 MHz Snow)

Software for this group of which yours is a member generally is identified:

Original OS Mac OS 9.1 (Mac OS ROM 7.5.1) and Mac OS X 10.0.4 (4P13)

Later OS Mac OS 9.2 and Mac OS X 10.1, 10.1.2, 10.1.3, or 10.2

Maximum OS Mac OS X 10.4.11

Hardware Test AHT (iMac/eMac) 1.2.1, 1.2.2

(firmware update would have been version 4.1.9)

So the grey disc installation set, if you can get the optical drive to read contents

should have imprinted on the label certain information pertaining to above. An

information database online I tried to check by serial number, didn't yield details.

The built-in slot-load optical drive may have dust; it may be that use of a can of

compressed air could work to attempt to dislodge any. But there usually is a

cover or protective section that moves out of way to help keep dust out. By now

IF dust is a problem inside the disc drive or if that drive is otherwise defective,

further investigation may be required.

The correct system install-restore disc may be used to start the computer, and

bypass the system in the hard drive, then erase present system; and re-install.

So hopefully the grey-label disc media is for your exact vintage model series

iMac G3 and not some other; because a different set won't generally work.

And if the optical drive is bad, you would need to determine that before any

attempt to do more than clear debris from the slot. More information on opening

these should be available in the iFixit.com Mac repair guides; for iMac G3 model.

And a repair guide should show the process to open this later model iMac G3.

Hopefully the unit can be cleared and new system from original media installed.

Good luck & happy trails! 🙂

You may be able to troubleshoot and/or perhaps attempt an installation

from another Mac with FireWire ports, and use FW Target Disk mode...

• How to use and troubleshoot FireWire target disk mode - Apple Support

This FW TDM would allow the iMac G3 (if FW ports are present) to be

booted to that mode, and seen by the prerequisite working Mac as an

external FW Hard Drive. You also may be able to use the healthy Mac's

internal optical drive to install a system or use a native Disk Utility in

the working Mac so attached by FW Cable, to attempt manipulation of

deficient iMac HDD content. (IF there is no encryption of files on HDD.)

In some instances it is possible to use a grey-label system install disc

set on a different series; however that is rare. In one instance, I was

able to use a G4 eMac installer to put Panther 10.3.9 on early iBook

white G3 portable. In fact the G3 could boot from the install disc. So

that orphan disc was useful to troubleshoot when OS X disc was not

available for earlier G3 iBook white.

However if the optical drive has some defect, any disc may eject.

In order to start from a suitable install restore disc, the C key should

be held on startup once a system disc #1 is accepted; not rejected.

https://www.cnet.com/news/installing-os-x-with-a-broken-optical-drive/

I've owned several eMac, iMac G3/G4, iBook G3/G4, Mini G4/Intel,

MacBook1.1, and dozens of others; most had issues & I repaired all

to donate (a learning experience, not profit-seeking) about 400 mac.

So perhaps the FW TDM could be used one way or another to access

the ailing iMac G3 (summer 2001) model. If nothing else, one can erase

a hard drive; reformat to suitable HFS+ and a few other possibilities.

The systems your model build series could use, are in the above post;

and hardware test AHT versions are listed, they are different disc than

install disc#1. ~ I've used Pacifist to access non-boot system discs to

then extract software, when the installer-disc would not work, to get a

system or essential applications, etc. Not easy; you learn by doing.

Good luck & happy trails! 🙂

While there is a link 'about' the firmware update 4.1.9, the subsequent

links to get it may not have content. Others elsewhere, routed back to

the front page of the most-recent Support site. This has ES/EN content:

iMac (Slot Loading): Install iMac Firmware 4.1.9 Before Mac OS X 10.2 or later - Soporte técnico de Apple

The computer needs the Firmware Update installed prior to OS X 10.2 system.

And this model original disc media installed an older Mac system 9.1 or 9.2

and then a vintage OS X could be installed; and the missing Firmware Update

4.1.9 needed to be installed prior to attempted boot into Jaguar 10.2, or it'd be

toast. This was the fear of upgrading with this transition period model, w/ OS X.

Tried to edit earlier post, to make minor corrections but my internet is slow and

was unable to before the time window; once time-out, I was unable to correct.

Pre-conditions of installing the Firmware Update prior to running any OS X

later than OS X 10.1.5 (in order to run Jaguar 10.2, this is required upgrade)

this must be installed in the old Mac while it is running in System 9.1 or 9.2.

There is a bootup related failure if the old Mac tries to start from an installed

or installer disc where the later OS X is the system. Even the install CD/DVD

may nearly kill the hardware. ~ This was an issue that I faced, when I sought

to run a later Mac OS X than the iMac 400DV shipped with. And it could dual

boot early Mac System 9.1 or 9.2 into later Mac OS X.

If you could start the computer and see what the system is, there is a page

where you may see the Boot Rom version number. And it would need to be

Firmware 4.1.9 running (via older System 9.1 or 9.2 MacOS) prior to attempt

to boot from Panther 10.3 install CD or DVD media. This can cause hardware

failure where the display and video boards fail; there was a workaround, but

few were able to pull it off unless they had additional skills & another iMac G3.

Anyway, I found a link to notice about Firmware 4.1.9 and it does not get far

don't know if there is one to download the upgrade compressed file. Linked

page tells most exactly (but not thoroughly) what the upgrade requires.

Good luck & happy trails! 🙂

According to the label specs listed in the photo that you posted, that iMac has a CD-ROM drive, which would rule out a DVD installer disk. You'll need the universal installer (CD-ROM) disk for Panther. Be sure that the 4.1.9 Firmware Update has been run before installing OS X.

Some PC windows running computers had FireWire auxillary cards

that allowed them to use peripheral devices with that connection

and early FW400 offered better sustained speeds than USB2.0.

You may be able to locate a FireWire externally enclosed optical

combo drive -- one that can play DVD, read/write CD. Or a super-

drive, which could read/write DVD and CD media at various speed.

{Other machines with later FW800 would require a 400/800 adapter

for later cable to connect between them, for thorough-put at FW400.}

"The 500 MHz model, with 128 MB of RAM, a 20 GB hard drive, and a

CD-ROM drive, was available only in indigo for $799 U.S." -apple history

A long-standing link to Apple Support no longer works, to get the update

for Firmware that your G3 iMac would need to run later than 10.2 Jaguar.

Version 4.1.9 Firmware may be available from some online archive. None

of my present Macs require that vintage firmware to run OS X. Although

my iMac G3 400DV model did require Firmware update to run 10.3.9.

This project to try & make the old obsolete vintage G3 low-end iMac run

may not be worth the effort overall. A more recent MacBook with Intel

based processors (one that can run Snow Leopard 10.6.8) is affordable

& more practical vintage unit to use. Yet web browser support is fading.

A problem with convection cooled iMac G3 was the analog power board

usually failed in part due to extended periods of poor cooling; and those

boards (PAV power analog video) are often very rare, and not refurbished.

Most vintage users who are hobbyists with interest in specific model builds

would try to get a few other similar models so as to have working spares

that could be used as parts. And learn enough ahead, to know going into

these, if your DIY skills are equal to learning and performing needed tasks.

You may try and see if an Apple User Group exists in your area where there

may be someone who knows of vintage obsolete users who may want to

share their knowledge and sources for additional resources; some may exist.

In any event...

Good luck & happy trails! 🙂

There is an odds-on-favorite if this computer had ever been running a

newer OS X than 10.1.5, the/then owner likely had upgraded Firmware

to version 4.1.9; so that may not be a problem. Acquiring original Mac

System 9.1 or 9.2 on the machine version installer CD and use that era

utility to reformat & install a bootable system (and see what the BootRom

version, Firmware) that had been installed on the logicboard hardware, is.

When I was given an iMac G3 400DV, it had hardware issues which were

involved; first the hard drive and clock battery were replaced; these solved

a few issues. Then there still was a clicking hard drive sound, but not HDD.

And finally the gifting party had the Apple independent shop it came from

repair it while I had it there, 100 miles away from my residence.

Ultimately, though it was a unique and fun machine, the days were numbered

and so I donated it to a salvation army store (along with a dozen other Macs)

in Seward AK, after ordering a then/new iMac G4 17-inch 1.25GHz model from

Apple online... I should have kept the iMac G3 400DV, it was less trouble!

At this late in the game, to have an iMac G3 without a Combo (CD R/W + DVD/R)

among other details, plus with untold issues, you are best be rid of it; there are

persons who may appreciate the challenge. ~ The one I had was a good movie and

music player; had good audio. And the original owner included all software on disc.

Good luck & happy trails! 🙂