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Mac OS X 10.4.0 (eMac G4/1.42 2005)

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Guides on emulating older applications

The Apple eMac G4/1.42 (2005) features a 1.42 GHz PowerPC 7447a (G4) processor with the AltiVec "Velocity Engine" vector processing unit and a 512k on chip level 2 cache, 256 or 512 MB of PC2700 DDR SDRAM, an 80 GB or 160 GB Ultra ATA/100 hard drive, a tray-loading "Combo" or dual-layer "SuperDrive" optical drive, ATI Radeon 9600 graphics with 64 MB of dedicated DDR SDRAM, as well as support for AirPort Extreme and Bluetooth (neither pre-installed) in an all-in-one case with a 17.0" (16.0" viewable area) CRT display (resolution support up to 1280x960 in 24-bit color).

The eMac G4/1.42 (2005) shipped with an ice white Apple "Pro" keyboard and mouse, and boots into Mac OS X 10.4 "Tiger" or later (it cannot boot into Mac OS 9, although it is capable of running Mac OS 9 applications within the Mac OS X "Classic" environment provided by Mac OS X 10.4.11 and earlier).

The eMac "2005" models use the same architecture as the USB 2.0 models, but have a faster processor, superior graphics, and enhanced optical drives. The high-end configuration also provided additional RAM and a larger hard drive.

691-5519-A,2Z,eMac. Mac OS X Install Disc 1. Mac OS v10.4. Disc v1.1_2005 (CD)
691-5526-A,2Z,eMac. Mac OS X Install Disc 2. Disc v1.1_2005 (CD)
691-5527-A,2Z,eMac. Mac OS X Install Disc 3. Disc v1.1_2005 (CD)
691-5520-A,2Z,eMac. Mac OS X Install Disc 4. Disc v1.1_2005 (CD)
691-5327-A,2Z,eMac. Mac OS X Install Disc 5. Disc v1.0_2005 (CD)
691-5328-A,2Z,eMac. Mac OS X Install Disc 6. Disc v1.0_2005 (CD)
691-5329-A,2Z,eMac. Mac OS X Install Disc 7. Disc v1.0_2005 (CD)
691-5330-A,2Z,eMac. Mac OS X Install Disc 8. Disc v1.0_2005 (CD)
691-5331-A,2Z,eMac. Mac OS X Install Disc 9. Disc v1.0_2005 (CD)
691-5332-A,2Z,eMac. Mac OS X Install Disc 10. Disc v1.0_2005 (CD)
691-5333-A,2Z,eMac. Mac OS X Install Disc 11. Disc v1.0_2005 (CD)
691-5334-A,2Z,eMac. Mac OS X Install Disc 12. Disc v1.0_2005 (CD)
691-5339-A,2Z,eMac. Mac OS X Install Disc 13. Disc v1.0_2005 (CD)
691-5340-A,2Z,eMac. Mac OS X Install Disc 14. Disc v1.0_2005 (CD)
691-5425-A,2Z,eMac. Mac OS X Install Disc 15. Disc v1.0_2005 (CD)
691-5426-A,2Z,eMac. Mac OS X Install Disc 16. Disc v1.0_2005 (CD)

Architecture: PPC PPC (Carbonized)

Install/Restore disc images for the Macintosh eMac G4/1.42 (2005).


Klaus Nonik's picture
by Klaus Nonik - 2018, February 12 - 6:16am

Now that I have a set of discs that work, I've set about the task to repair the images. First, I inserted each CD and checked them with OS X 10.4.11 Tiger's Disk Utility First Aid. All except the disc burned from the re-built Disc 8 image provided by MikeTomTom report errors in the Volume Header. In an attempt to get the discs back to a writable file system that First Aid could possibly repair, I used Disk Utility to make new disk images from each burned CD and chose "read/write" as the Image Format. When I went to mount and repair the new read/write images, I found that had no errors! Curious, I made a new disk image from the bootable Disc 1 CD and chose "compressed" as the Image Format. This compressed (and thus, read-only) image showed the exact same error in First Aid as the physical CD from which it had been created. I can only surmise that the volume header errors get corrected when the read/write disc images are created, or possibly when they are mounted for the first time.

Next, I was eager to see if the corrected image of Disc 1 was still bootable. I burned a CD-RW from its read/write disc image, and indeed--it booted! Even better, when this burned CD was tested with First Aid, it passed with flying colors. So now it was starting to look like I might have a way to fix the whole set.

I didn't really want to archive read/write disc images, so I proceeded to make a new disc image for each read/write disc image by mounting each read/write disc image and using Disk Utility to make a new disk image from it. Only this time, I chose "compressed" as the Image Format to save some space and make the disc image read-only. As a double-check, I made sure each of the new compressed disc images passed First Aid with no errors.

Finally, I burned a whole new set of CDs from the new re-built compressed disc images. All burned CDs were tested with First Aid; and again, no errors were found. So it was time to see if the CD set actually worked...

The first installation went smoothly. However, I hadn't selected every piece of optional software when I customized the installation. In fact, my customization choices didn't call for a couple of the discs near the end. So I did another installation with everything requested. That called for all the discs, and also went smoothly. I'm hopeful that means every file on every disc was read by the installation script, and that no files were either unreadable or not found.

So, I believe I now have a working, error free, sixteen disc image set. If you'd like me to provide them, let me know how I can best transfer them to you for posting.

While I'm at it, I should mention that I've acquired an original two DVD set for the 2004 eMac G4 (USB 2.0) models:

691-5071-A DVD eMac. Software Install and Restore 1 of 2
691-4910-A DVD eMac. Software Install and Restore 2 of 2. Disc v1.1

These discs restore an eMac to an OS X 10.3.4 Panther system, and include AHT 2.2. They also include the ability to install Classic support.

If someone would like to post them, I'd be happy to provide disc images of them to you.

Lastly, I believe the following two DVD set restores the same version (10.4) as the sixteen CD set already posted here:

691-5518-A DVD DL eMac. Mac OS X Install Disc 1. Mac OS v10.4. AHT v2.5. Disc v1.1
691-5493-A DVD DL Mac OS X Install Disc 2. Includes Mac OS v9.2. Disc v1.0

Even better, this two DVD set includes AHT and the ability to install Classic support (Mac OS v9.2). It would be great if these two DVDs were uploaded and added to this page. That way, folks could download either the CD or DVD set, depending on what kind of optical drive is in their 2004 eMac G4 (USB 2.0) model.

MikeTomTom's picture
by MikeTomTom - 2018, February 10 - 2:50am

alright--I admit that I sounded a bit whiny in my previous post.

No, I think you had valid reason to be annoyed.

This entire collection should be scrapped and replaced by original copies that have been properly tested as working correctly - before they are archived here.

Easier said than done. And while it's relatively easy to re-build most of the disks above if they have errors, rebuilding the all important boot disc #1 is going to be the stumbling block. I spent a wasted day yesterday trying to rebuild a bootable disc #1 copy that was error free and could still boot a Mac, before I packed it in. Fortunately, I was using RW discs.

Anyway I am glad that you were able to finish the install successfully by using the re-built disc #8. That at least is a story that ends on a happy note.

Klaus Nonik's picture
by Klaus Nonik - 2018, February 9 - 3:36pm

Alright, alright--I admit that I sounded a bit whiny in my previous post. I think I was just irritated by all the burned coasters building up around me.

I found an unopened package of CD-RWs which spurred me on to try again. At least now I can just keep erasing the same discs over and over, rather than make more CD coasters. So this time, I burned a fresh, complete set using Toast 5.2.3 under Panther from the same files I previously downloaded and locked. Unsurprisingly, that set failed to install right after asking for Disc 8, exactly as had happened to me so many times previously. So then I tried burning the replacement image for Disc 8 created by MikeTomTom, and retry the installation. Bam--worked flawlessly! So for me, at least, the current posted set works.

I've got some ideas on how to rehab the images that I want to try out, and then I'll report back my findings. My goal is to wind up with a set of images that all pass Disk Utility First Aid while preserving the ability to boot where appropriate (Disc 1).

Klaus Nonik's picture
by Klaus Nonik - 2018, February 8 - 1:31am

Ok, so the rebuild of me eMac is done, and once again, I can use it. In addition to running AHT several times, I've successfully installed OS X Panther, Tiger, and Leopard on the rebuilt eMac using known good media. Now, back to checking the discs posted here…

Starting with the bootable "Mac OS X Install Disc 1" image, I've run into trouble. If I burn and verify the posted image with Toast 5.2.3 under Panther, the CD is bootable. However, if the burned CD is tested with Disk Utility First Aid, it reports an error with the file system header. I tired using the image rehab process described by MikeTomTom: I made a new image from the burned disc using his procedure, and indeed, it saved a disc image that had no errors. But, when the repaired disc image is used to burn yet another CD, the resulting CD based on the rehabbed image is not bootable. Even though the file system on the new CD passes First Aid, it's can't be the same disc image as was originally authored by Apple because it's not bootable, and thus it can't be used to install/restore OS X.

I've burned quite a large number of discs trying to get this set to work, and I think I'm ready to declare that the set as posted is just not going to work for me. If someone else is able to burn this set, and then uses those discs to successfully restore an eMac, I'd be very interested in hearing about it. Maybe then I'll learn how to make these images work, and better still, what I've been doing wrong!

Until then, I'm calling and end to my attempts to make this set work for me. Thanks for all the feedback and suggestions that have been provided.

MikeTomTom's picture
by MikeTomTom - 2018, February 6 - 9:45pm

I'll go through these disc images again, and report back all images that needed to be re-imaged to fix the volume header issue, and if that allows the installation process to complete.

Klaus; It would be excellent if you could do this after the rebuild and when you can get around to it. Thanks.

SkyCapt's picture
by SkyCapt - 2018, February 4 - 8:34pm

DIY DIP switches are dangerous. The heat from the soldering iron tends to distort the switch contacts inside the DIP device, then they can make intermittent contact when you want them closed - whereas the typical ball of solder bridge is seldom intermittent. The original resistors which the DIP replaces had been "protection" resistors which protect the transistors in the PLL against being damaged by spiky electrical current. When a set of protection resistors are removed and a DIP switch put in their place, the chip(s) ability to switch might not stay functioning for long. A better method tho hard and tedious to build is to keep every protection resistor inline, so each physical switch is like opening and closing one end of the resistor instead of replacing the resistors.

The vent spew from capacitors can be acidic, either liquid or vapor carried on air. Try cleaning/wiping things thoroughly, or it may experience accelerated corrossion.

Do you have the CPU's original core voltage value? And the voltage regulator type?? There were 2 types of G4 reg, the ones that only govern voltage in .05 volt increments, vs the better ones that can fine tune +/- .025 volt increments.

Klaus Nonik's picture
by Klaus Nonik - 2018, February 4 - 3:56pm

My eMac is currently in pieces as I'm completing an over clocking upgrade wherein a DIP switch package is wired and mounted to the logic board to allow easy clock speed changes without additional soldering. Although I had previously inspected the logic board for bad capacitors and found none, I discovered the daughter "Step Down" board was full of Kuan Kun (Su'Scon) Electronic Co. capacitors that had vented! It's amazing the eMac was working so well.

The daughter board is now recapped, the DIP switch package installed, and reassembly has begun! First, I'll retest the system with Apple Hardware Test runs. Then, I'll run a few Mac OS X installs from known good discs. After those tests pass, I'll go through these disc images again, and report back all images that needed to be re-imaged to fix the volume header issue, and if that allows the installation process to complete.

MikeTomTom's picture
by MikeTomTom - 2018, January 28 - 9:57pm

Hi Klaus, have you tested the replacement disc #8, above? - (622.39 MB)

Can you please list any others that specifically fail Disk Utility checks. It may be possible to restore them to good health (if disc 8 is now OK).

Klaus Nonik's picture
by Klaus Nonik - 2018, January 28 - 7:16am

That's exactly the result I'm seeing when I check a Disc 8 I burned with Disk Utility First Aid. And, I get the same result for most, or possibly all, of the discs I burn using the other images posted here. I'm concerned that many, if not all, of these images won't pass a Disk Utility First Aid scan, and are thus somewhat corrupt as posted.

MikeTomTom's picture
by MikeTomTom - 2018, January 28 - 4:25am

@Klaus Nonik: I've attempted to rebuild the image from scratch.

  Inserted CD I'd burned with Toast earlier, mounting it on the desktop.
  Launched Toast 5, clicked "Data" tab and selected "Mac OS Extended CD"
  Dragged mounted disc icon into Toast's window.
  Chose "Save as Disc Image" from the "File" menu.
  When done; Quit Toast and locked the new CD image.
  Mounted this with Disk Utility (couldn't do this with the original image from here) and ran tests to verify.

It came back with "Volume passed verification".

Looks as though it may have cured the volume header issue.

I will burn a fresh CD from the new image and test further. If it passes inspection, I'll replace the #8 image here with it.

[Edit]: Yes, it has passed all tests for me and I have replaced the image above.

The replacement disc #8 DL is labelled " (622.39 MB)" to distinguish it from previous uploads.

I've also numerically re-ordered the above DL's (disc #8 now 8th DL from top).

If there are other discs with errors here, they may be able to be fixed.

MikeTomTom's picture
by MikeTomTom - 2018, January 28 - 2:15am

@Klaus Nonik: Sure. Here is the result of the Toast disc scanned by Disk Utility on Tiger:

Verifying volume "Mac OS X Install Disc 8"
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking Catalog hierarchy.
Checking volume bitmap.
Checking volume information.
Volume Header needs minor repair
The volume Mac OS X Install Disc 8 needs to be repaired.

Error: The underlying task reported failure on exit

1 HFS volume checked
	Volume needs repair

Pretty much the same as what you're hitting by the looks of things.

It looks like install disc 8 " (622.35 MB)" needs replacing - The entire set is not much use without it being in good working order.

Klaus Nonik's picture
by Klaus Nonik - 2018, January 28 - 12:38am

I had a few examples of burn verification errors myself, but I never used any discs that didn't burn and verify successfully in any of my many attempts to install this software set onto my eMac. I also tried burning at 4X, but it also seemed to occasionally result in burning a disc that failed the verification phase of Toast.

Could you try running First Aid from Disk Utility against your successfully burned CD? I think very modern OS X versions, like High Sierra, won't let you run First Aid against an optical disc; however, I think Tiger through Lion, at least, will allow it. I'm curious to see if your disc, like each successfully burned Disc 8 I made, fails to get a clean bill of health from Disk Utility First Aid.

MikeTomTom's picture
by MikeTomTom - 2018, January 27 - 4:49am

@Klaus Nonik: Bummer!

The install disc #8 (4th DL in list) " (622.35 MB)":

I tested this by attempting a burn with ImgBurn, which gives nice full log readouts. It failed at:
W 13:06:40 Failed to Write Sectors 218304 - 218335 - Reason: Write Error

But, I tried again and burned at a much slower 4x speed and it then burned successfully.

On a Mac running OS X tiger using Toast (version 5x), I tried this method:

Clicked "Other" tab, then "Disc Image". Dragged the (locked) .toast into the window, clicked "Record" button. Next, chose "Speed 4x" and clicked "Buffer underrun prevention", then "Write Disc".

This burned to a disc that "looks OK" in the Finder when mounted.

Anyway, try burning at a very slow speed and see if that helps. Not saying this will fix things just that this image seems pretty dodgy and it may help if it gets burned at a very slow rate.

Unfortunately I don't have this model eMac to test a full install of these discs.

Klaus Nonik's picture
by Klaus Nonik - 2018, January 26 - 10:13pm

I've installed Toast 6 Titanium, and indeed it can read these files. However, things haven't gone so swimmingly after that. During the installation using discs I burned, it always fails during the reading of Disc 8 with an error in the installation log stating that a file named "CPU_iDVD_A" could't be read successfully. I've burned a few copies of Disc 8, all which verify as burned correctly, but none allow the installation to get past Disc 8. I'm suspicious that at least the Installation Disc 8 image may be corrupt.

As per good Toast practice, I downloaded the .toast files and immediately locked them before opening them with Toast to do the burns. I've also re-downloaded the Disc 8 image a couple of times, just in case there had been a problem with a download--but I'm always met with the same failed install result.

One other note: It seems many, if not all, of the disc images I burned to CDs resulted in CDs that fail to pass Lion or Tiger's Disk Utility First Aid. It seems to always find some minor problems with the header of the CD's file system. When I mount similar system-specific grey CDs that come directly from Apple, I note they always pass Disk Utility First Aid without issues. In fact, I've just spot checked a sample of other system software CDs and DVDs I've burned from images posted by the same archivist, and they all pass First Aid without issue.

If someone else successfully uses this disc set as-is, please post to let us know that the problem I'm having must be something I'm doing wrong. Until then, I'm concluding that there's something wrong with some or all of the images as posted.

As always, thanks for putting in all the work to post and store these images. It's really appreciated--even when I can't make it work out for me this time!

MikeTomTom's picture
by MikeTomTom - 2018, January 16 - 10:03pm

I can't seem to mount any of these disk images. [...] Reason: not recognized.

The original archivist and uploader of these files tended to use a command-line version of 7z to create each archive (he left a clue regarding his compression methods used, in the note found on this page).

Anyway, I tested one of the DL's above, "" and extracted it using 7z (on a Windows box). It extracted OK, to a file named: "691-5327-A,2Z,eMac. Mac OS X Install Disc 5. Disc v1.0_2005 (CD).toast"
- To which I think that standard Zip tools may have a problem with this file-naming scheme (punctuation in the file name).

I was able to mount this image OK in Sheepshaver - it mounted as "Mac OS X Install Disc 5". So I assume the others would be OK, too...

You may need to use 7z to extract without error (you could also try The Unarchiver on OS X).

[Edit] I since extracted this image on Mac running OS X 10.4.11, using the built-in Archive Utility ( - it extracted OK. I get the "Not Recognized" error when trying to mount it using Disk Utility, but Toast mounts it OK. - Use Toast to mount (make sure to lock the images beforehand).

Klaus Nonik's picture
by Klaus Nonik - 2018, January 16 - 6:17am

I can't seem to mount any of these disk images. Under both Lion and Tiger, the disk images couldn't be opened. Reason: not recognized.