trying to install Mac OS 9 on iBook for use with Classic Mode on 900Mhz

I have a program that requires Classic mode in Mac OS X Tiger. When I try to drag-and-drop install, it says "This version of Mac OS only functions on its original install media, not on any other" when I try to install it. I can use the system folder directly from the CD in Classic Prefrences in OS X. When I try to run the "Install Mac OS" file, but it stops in the middle saying "The helper program "Installer Engine" has quit unexpectedly. Mac OS Installation cannot continue." and exits with an incomplete installation. I can boot from the CD, but I am afraid that it will leave me with an unbootable part of an OS. My other iBook has Mac OS 9 successfully installed on it from when I got it. I am trying to run a Classic application called Finale NotePad. Somebody help!

iBook G3, Mac OS X (10.4.11), 366 Mhz and 900 Mhz iBooks here

Posted on Dec 13, 2007 6:21 AM

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9 replies

Dec 13, 2007 6:51 AM in response to iBookPodguy

Hi, iBookProdify -

Welcome to Apple's Discussions.

If you can boot to the OS 9 Install CD on that machine, do so. Then do a Clean Install of OS 9. A clean install of OS 9 will not remove anything, but will prevent the installer from being confused by one of OSX's folders as beinng an unnknown version of OS 9.
Article #58176 - Mac OS 8, Mac OS 9: Performing a Clean Installation

It is probable that you will not be able to install OS 9 from that CD. The 900MHz model iBooks need the model-specific version of OS 9 that came with the machine originally' this is not available on a stand-alone install disk.

Those models came with a combination installer on a disk set that boots to OSX. They can be used to install just Classic on a machine which already has OSX on it. One or more of these articles should assist in doing that -
Article #106294 - Mac OS X: How to reinstall Mac OS 9
Article #107383 - Mac OS X 10.2, 10.3: How to perform Mac OS 9 clean installation with Restore CDs
Article #42929 - Using Restore Discs with Mac OS X 10.2 through 10.3..3

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If you only need Classic, and not a bootable OS 9, then you can copy a working OS 9.1 or later System Folder from another machine and place it on that hard drive. This copying can be done via CD or other media, or via drag and drop over a Firewire Target Disk Mode connection or over an ethernet connection.

Dec 19, 2007 1:48 PM in response to iBookPodguy

Hi, iBookProdigy -

Tried to copy from a CD, was not usable.


If you were copying the System Folder from an OS 9 Install CD, that will not be usable - one or more of the files in that kind of System Folder have been altered, and that System Folder will work only when it is on the CD.

If it was one copied from another machine, it will not be able to be used for booting while on the CD. If the machine it was copied from is a different model Mac, after copying it to your hard drive it will not be usable usable for booting your iBook, but should be usable for Classic.

In order to rebless an OS 9 System Folder, open it, drag the files Finder and System out onto the desktop. Close the System Folder. Drop those two files back into the closed System Folder.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

trying to install Mac OS 9 on iBook for use with Classic Mode on 900Mhz

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