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10.4: Install Tiger on older unsupported Macs Install
Tiger only hintPanther (10.3) was able to install perfectly on the older iMacs and Power Macs (Blue & Whites). Now, becasue a FireWire port is required, you cannot install on those machines. There are, however, two ways you can install it on unsupported machines. You can either clone a drive that already has Tiger running, or you can burn a compatible copy of the install disc. I will only cover how to reburn the DVD in this tutorial.

You Need:
  1. At least 256MB RAM in the computer you plan to install Tiger on.
  2. A working Mac with a DVD Superdrive. It doesn't matter whether external or internal, but it must be a burner.
  3. The mac you plan to install Tiger on must have a DVD drive.
Read on for the instructions...

Here are the general steps to follow -- note that iMac-specific 'no DVD' installation steps follow below this section.
  1. Go to Applications->Utilities and open Disk Utility.

  2. Insert your tiger DVD.

  3. Select Session 1 of the Tiger DVD and press the New Image button. (Do not select the drive name itself, or it will not make an image.)

  4. Name the image file and press OK. The image will take between five and fifteen minutes to be built. Grab a cup of coffee -- it may be longer or shorter, depending on the drive and whether it is internal or external.

  5. Double click on the new image to mount it.

  6. On the mounted install image, go to /System -> Installation -> Packages.

  7. Control-click on OSInstall.mpkg and select Show Package Contents from the pop-up menu.

  8. Go into the Contents folder, and control-click on OSInstall.dist. Select Open With -> Other from the pop-up menu, then navigate to whereText Edit is, and click Open.

  9. Look for the following lines of code (note: line break added for a narrower display; don't add one in the code!):
    function checkSupportedMachine(machineType){
      var badMachines = ['iMac','PowerBook1,1','PowerBook2,1', 'AAPL,Gossamer', 
      'AAPL,PowerMac G3', 'AAPL,PowerBook1998', 'AAPL,PowerBook1999'];
    
    Now, if you want to be able to install on all unsupported machines, just delete eveything in the square brackets. I changed my OSInstall.dist to (note: line break added for a narrower display; don't add one in the code!):
    function checkSupportedMachine(machineType){
      var badMachines = ['PowerBook1,1','PowerBook2,1', 'AAPL,Gossamer',
      'AAPL,PowerBook1998', 'AAPL,PowerBook1999'];
    
    With the code above, it enabled Tiger to be installed on an iMac and Power Mac G3 (Blue & White).

  10. Save the changes to your desktop under the name "OSInstall.dist" -- without the .txt ending.

  11. Drag the new OSInstall.dist into the window that has the contents of OSInstall.mpkg. It will ask you whether to replace the old one or not. Choose Replace.

  12. Unmount the disk image.

  13. Go into disk utility. Select your image and then press Burn.
After the burn is done, you'll now have a more-compatible Tiger installation disc.

To install on an older iMac (without DVD) you need:
  1. Spare AT (386) power supply OR A long Molex "Y" cable.
  2. An IDE cable that is fairly long.
  3. At least one to two hours of time.
  4. 256MB RAM.
  5. Big hard drive.
  6. DVD Drive (must be an internal model).
Here are the instructions...
  1. Open iMac and get to the logic board area.
  2. Unplug the CD and hard drive and remove them and their cables.
  3. Plug the IDE cable to where the hard drive was connected (inside iMac).
  4. If you have the long Y connector, plug it into where the hard drive power was.
  5. Re-assemble and feed IDE cable (and Y connector if applicable) through the space where the CD drive was.
  6. Plug AT power supply into drives and wall --or-- Plug Y cable into both drives.
  7. IMPORTANT: Set the jumper(s) on DVD drive to master and on hard drive to Slave.
  8. Either Turn on AT power supply, then computer then iMac, or turn on iMac (if you used the Y cable).
  9. You should now get a flashing folder. Put the Tiger disc you just burned into the DVD drive.
  10. If it all worked, you should see the familiar Grey apple logo and with white background.
  11. Install Tiger; set setting to the way you want them.
  12. When it restarts, turn off the computer (and AT power supply if applicable).
  13. Set jumpers to DVD: Slave, Hard Drive:Master.
  14. Start up computer and check if it worked.
  15. Unplug DVD and hard drive from computer, and take apart iMac.
  16. Plug the CD back in and place the hard drive back into the iMac, and reconnect all cables. (Make sure the hard drive jumpers are set to Master or Single Drive)
That's it -- enjoy!

[robg adds: I haven't tested this one, and clearly (with the iMac hint), there's potential for harm to yourself or your computer. Proceed at your own risk!]
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10.4: Install Tiger on older unsupported Macs | 29 comments | Create New Account
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A simpler solution?
Authored by: Darukaru on Dec 16, '05 07:53:25AM
XPostFacto runs on New World systems now...

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10.4: Install Tiger on older unsupported Macs
Authored by: bdog on Dec 16, '05 08:01:03AM

I've found it easiest to take the hard drive out of your older computer, put it in a firewire enclosure, and use a newer computer to install the OS to that drive. When it's done installing, put the drive back into the older computer and away you go!



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10.4: Install Tiger on older unsupported Macs
Authored by: Whosawhatsis on Dec 16, '05 02:23:40PM

That's what I did with my stripped-down graphite iBook (now running on a 3.5" drive). I didn't realize that firewire supposed to be required, I've just been installing stuff on that computer that way because the computer's optical drive died long ago.

---
I was offered a penny for my thoughts, so I gave my two cents... I got ripped off.



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10.4: Install Tiger on older unsupported Macs
Authored by: humanekt on Feb 28, '06 03:56:36PM

Many of the older, non-iBook/Powerbook machines use the same type IDE drives. I've taken a number of hard drives out of iMacs and put them into my G4 tower as slave drives, installed Tiger, and put them back in their home bodies. No problems. Even did it to my mother's 350MHz non-firewire iMac. It runs like a charm.

---
MacAddict
Vermont USA



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10.4: Install Tiger on older unsupported Macs
Authored by: The Gonif on Dec 16, '05 09:18:12AM

Tiger always let you install on a Blue & White PowerMac G3. The "PowerMac" in that file probably refers to the old beige G3 machine.

However, does anyone know how well Tiger would run on an iMac/333 with 256 MB of RAM? Better than Panther or worse? Will certain features not run well on an "unsupported" machine?



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10.4: Install Tiger on older unsupported Macs
Authored by: neuralstatic on Dec 16, '05 11:17:43AM

i've installed it, at a client's insistance. it didn't do well compared to panther. maybe flooding it with ram would have helped. but apples to apples it seemed much worse.



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10.4: Install Tiger on older unsupported Macs
Authored by: MikefromCanmore on Dec 16, '05 01:26:06PM

I'm running Tiger on an iMac my school gave me (333 mhz). Things run noticeably slower than my iBook but I have not seen much reduced functionality. You are only limited by the system requirements of the software you are trying to run.



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10.4: Install Tiger on older unsupported Macs
Authored by: planetjay on Dec 16, '05 10:45:58AM

bdog is correct. Much easier.

I put the drive back into a Bondai 233 with 128megs and it failed to boot first time. After that it has ran just fine. Doesn't seem slower than 10.2 or 10.3 but I do avoid Dashboard. If you have anything beyond a base install of the OS you probably want to stop Spotlight from indexing.

Makes a nice sever though.



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10.4: Install Tiger on older unsupported Macs
Authored by: LouCioccio on Dec 16, '05 12:57:28PM

I was able to install Tiger on my wifes' B&W 400Mhz but I had to replace the old cd-rom with an original RAM-drive that was in my G4 sawtooth. It works fine.



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10.4: Install Tiger on older unsupported Macs
Authored by: MikefromCanmore on Dec 16, '05 01:28:50PM

I just checked the requirements at Apple, and B&W G3s are supported. The Powermac that is in the file is probably a beige G3.

I don't have access to a firewire case but it sounds like it can work.



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10.4: Install Tiger on older unsupported Macs
Authored by: mister_fister666 on Dec 16, '05 02:56:56PM

I tried this some time ago, using essentially these same instructions
I had found on the net somewhere, on my lombard powerbook g3. I got
it installed, and then the machine began crashing all over the
place. Make sure you back up everything first, and have a
clar plan to revery back to 10.3 before you try this.



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10.4: Install Tiger on older unsupported Macs
Authored by: Warren Oates on Dec 17, '05 11:42:13AM
Well, that same script checks for a valid ROM version too, and I'm surprised it finds what it needs on the older machines.

Anyway, a ROM mis-match would explain why it crashed a lot.

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10.4: Install Tiger on older unsupported Macs
Authored by: johndroz on Dec 19, '05 09:27:29AM

On a related matter, installing the standard version of Tiger on a Mac without a DVD...

Isn't it possible to make an image of the Tiger install DVD on another Mac, and then transfer that file (e.g. via ethernet) to the non-DVD Mac? Will that work?



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10.4: Install Tiger on older unsupported Macs
Authored by: creativone on Jan 13, '06 02:57:41PM

Actually for $9.95 you can get the cd version by exchanging in you dvd install disk with apple.
to get the form mailed to you or faxed to you, call
1-888-840-8433



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10.4: Install Tiger on older unsupported Macs
Authored by: RabidFox on Dec 19, '05 12:56:28PM

What wasn't mentioned by the original posting or its followups is that these original instructions are useful instruction for opening a iMac G5 Install disc (eBay, $45) to work with any system that can use the OS X binaries. Myself, I went through the file mentioned by the original poster and instead of commenting out regions, I forced a return (true) result whenever it might have returned false for the sections that blocked my Powermac G4 from installing the iMac G5 install disks. I was able to install everything, including iLife '05, Quicken 2005, etc., without any problems.

I'm glad someone brought this up, so I could mention this technique without being the one who first breached the topic.

Here's a couple notes:

1. The iMac G5 install disks are dual layer. You will need to use a dual layer capable system, with dual layer DVDs. You only need to edit Disk 1. Ritek (memorex, etc.) DL DVDs work fine.

2. OS X versions prior to Tiger cannot natively burn dual layer disks. If this is a problem for you (ie, Toast is too expensive) then you can download the trial version of Dragonburn 4.0 from NTI(?)'s website -- you get ten trials, and 30 days in which to do your stuff after which you can use Tiger with its dual layer support. If you've already got Toast or Dragonburn, nevermind.



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Not working with iSight iMac Install Disks
Authored by: bux on Dec 19, '05 09:12:29PM

Maybe this works with older G5 Install disks, or perhaps there's a step missing, but when I try this with the Install disk from the G5 iSight iMac I get the following error when attempting to copy the modified file onto the new disk image:

"OsInstall.dist cannot be moved because 'Contents' cannot be modified."

Any suggestions? Tried checking "ignore ownership" in get info, but no luck there either.



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Not working with iSight iMac Install Disks
Authored by: jroach on Jan 02, '06 02:33:55PM

Same here. Somehow Apple has made the Disc and any copied image not writable. I notice that in the 'Get Info' window for the mounted Disc Image under Permissions it says that the Owner is 'System'.



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10.4: Install Tiger on older unsupported Macs
Authored by: acurarollin on Jan 23, '06 12:04:20AM

Ok so I have a G5 tiger disc as well and i went through the original process burned back to dvd, Im running Tiger x86 on my Sony Vaio :) so i can burn DL disc's (works great btw) but anyway now i can get passed the machine id check when it looks for a g5 and i have a g4 sawtooth but it stops at the OSX install screen and says "this software cannot be installed on this system" So i went back into the osinstall.dist and went a little farther in the code and found a spot where it listed "var hwbeSupportedMachines = ['PowerMac8,2'];" obviously to check for a G5 I assume. So I had to change that to my machine id which was PowerMac3,1. Im burning it AGAIN so im gonna try and see if this works. Wish me luck



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10.4: Install Tiger on older unsupported Macs
Authored by: drjonez on Dec 24, '05 08:34:36AM

This didnt seem to work for me.. I might be chastized for this but i was using the install disks from my newer 1.6ghz TI pb and using it on my older 1ghz TI pb (older model with the black keyboard).

Popped up with the same error message after removing everything in the original post. Then tried it again by commenting out everything in that function except the 'return true;'

Mabye this installation disc does something different than the retail version of Tiger. This was an OEM disk.



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10.4: Install Tiger on older unsupported Macs
Authored by: shaunlawler on Jan 05, '06 01:05:47PM

I am having a similar problem to this.

I have just bought an install disc for tiger osx but it says it is for iMac G5 and I have a G4; and for this reason it doesn't work.

Is what was mentioned in a previous post helpful to making this it work on my system{see below}:

'What wasn't mentioned by the original posting or its followups is that these original instructions are useful instruction for opening a iMac G5 Install disc (eBay, $45) to work with any system that can use the OS X binaries.What wasn't mentioned by the original posting or its followups is that these original instructions are useful instruction for opening a iMac G5 Install disc (eBay, $45) to work with any system that can use the OS X binaries.'

If anyone has any ideas on how to get this working any help would be appreciated,

Shaun Lawler



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Can't Drag
Authored by: Anonymous on Jan 11, '06 06:14:08PM

I am trying to Install Tiger on an iMac G4 from my powerbook instalation disks. When I try to drag the OSInstall.dist to the window containing OSInstall.mpkg i get a message saying " The item "OSInstall.dist" could not be moved because "Mac OSX Install Disc 1" cannot be modified " I followed the instructions exactly as followed. Please help



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Can't Drag
Authored by: noahtom on Jan 12, '06 03:47:13PM

You made a disk image that is read only.

Go to the Disk Utility application select your disk image you created and use the convert button on top. You will then get a save as window and in the pull down setings you can choose 'read/write'. Then save as a new image and continue with your patching of the file.

Hope this helps



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Can't Drag
Authored by: acurarollin on Jan 22, '06 11:55:14PM

OK so I had the same problem but i went into the disc utility and under the convert menu you can convert the dmg to read/write and then you can copy the modified .dist back into the image then burn as usual, works



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Can't Drag
Authored by: clarkent on Feb 08, '06 11:32:14PM

Just in case this problem hasnt' been solved yet, the workaround I found was in changing the permissions. Once I had created the image, I still couldn't edit the file, so I changed the permissions for the package that includes the file to my username. You'll have to authenticate to do this, but once it's done, it's able to be saved as written. For consistency, I changed the permissions back to system once I'd edited them.



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10.4: Install Tiger on older unsupported Macs
Authored by: syzygies on Feb 14, '06 04:40:57AM

There are conceptually two distinct hints here: A software hint on how to modify the installer to play nice with older systems, and a hardware hint on how to physically use the installer with older machines. These are entirely separate questions, and anyone who confuses these questions will experience unnecessary aggravation. The software hint is priceless, and the virtues of following the hardware hint are controversial. Rather than reburning the DVD, I would recommend instead following the related hint

10.4: Install OS X without first rebooting from DVD
It turns out (I successfully tested this) you can just run the OSInstall.mpkg located in /System -> Installation -> Packages on the DVD.

I now save OS installers in a folder, containing the disk image(s) and an alias to OSInstall.mpkg. After copying physical media to my frequently backed up "Sources" folder, I put it away and never touch it again. One can install from disk images to any volume except the startup volume; I always have multiple startup volumes available, to avoid ever having to revert to optical media.



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10.4: Install Tiger on older unsupported Macs
Authored by: markmhart on Mar 01, '06 03:10:32PM

I've got a beige g3 mt 333mhz 384MB Ram, and I have tried EVERYTHING to get Tiger installed. I use xpostfacto 4, I've modified OSInstall.dist and reburned the dvd, and I've tried running install.mpkg directly from the disk image. I've made many changes to the OSInstall.dist program; right now, the machine checker and the rom checker both just return true.

The last dual-layer cdrom I burned went WAY into the install cycle before telling me I can't install on my machine. One stupid question just popped into my head - do I have to have 10.3 installed to install 10.4? I've got 10.2.8 on the beige, and I assumed a full-install of 10.4 wouldn't care what OS I have installed.

Any ideas out there? I would really love to have 10.4 on my beige.

Thanks!

Mark M. Hart



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10.4: Install Tiger on older unsupported Macs
Authored by: i_macosxhint on Sep 27, '06 04:46:00AM

i did what was told: deleted everything between the "bad machines variable". But my pb 667 mgz with 256 megs 'a ram got error msg upon installing. So i decided to erase the HD & try to install back jaguar & got kernel panic....



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10.4: Install Tiger on older unsupported Macs
Authored by: blueberrytiger12 on Jul 28, '08 07:36:19PM

I just had a success with putting Tiger on a Blueberry iBook.

Configuration:
Blueberry iBook G3 300 MHz.
64 MB Ram soldered in, 512 MB in expansion slot
80 GB hard drive (upgraded, yes.)

A friend of mine actually had Tiger install in 4 CD-ROMS. He told me that he had taken the DVD's, and split the packages up into 4 CD-roms -- NOT sure how he did that, that's the only mystery to me.

Problem was that none of these CD-Rom's would even mount or get read on my iBook when inserted. (Because they were burned too quickly, I suppose.)
SO, knowing that I would have to burn new copies of the media ANYWAY, I followed the above procedure for disk 1, burning brand new media of all 4 disks, and I burned them at 4X on an iMac Intel running Tiger.

The installer ran beautifully on my iBook with NO issues :-)

Now for the impossible -- upgrade the video ram. 4MB is a *censored* for video performance. So is 800x600. Oh well. You can only do so much I suppose :-)



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10.4: Install Tiger on older unsupported Macs
Authored by: SniperInTheDark on Feb 12, '09 03:14:25PM

iMac G3 users Beware, If you are using an IDE cord that is from a windows computer, it will have one less pin than the mac's port, and in the cable that I used it was sealed in solid plastic, so you have to count pins [9 on one side 10 on the other] and that middle pin is the one that you need to pull out. QUADRUPLE CHECK THAT ITS THE RIGHT PIN!!! Use small needle nose pliers, and twist the pin back and forth until it cleanly breaks. This pin is pretty much a tamper deterant so you cant hook up a different cord that would allow you to hook up a second
HDD or A different CD/DVD drive on the IDE bus. The hard drive I used had a hole where the useless pin went, but if your drive has all 20 pins DO NOT break the pin, it could be used for something.



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