How to Dual Boot OS 9 & OS X
Only a select few Mac computers, sold between May 2001 and January 2003 came with the ability to dual boot Mac OS 9 and Mac OS X. These Macs ran on OS 10.0 to 10.2. Newer models of Mac cannot dual boot OS 9 with the modern OS X. However, if you are lucky enough to get your hands on one of the dual boot Macs you can use both OS 9 and OS X with ease.
Instructions
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Start up your Mac computer in Mac OS X.
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Select "System Preferences" from the Apple menu. Click on "Start Up Disk."
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Select which disk you want to boot in, OS 9 or OS X. Click "Restart" if you want to boot from OS 9.
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Select "Control Panel" from the System folder in Mac OS 9. Select the "Start Up Disk." Click on "Mac OS X" and select "Restart" to boot from that drive.
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References
Comments
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Mat Ruane
Mar 08, 2011
This is ridiculous. Whatever CE let this pass should be canned. This is not a 'how to dual boot os 9 and 10' article, this is a four step article on how to switch between OS9 and OSX. You clearly show that you are either lazy or have no clue what you are talking about, or you already have a dual boot config set up by someone else and you have no clue how to replicate it. Amazingly not worth the time you spent or the money you earned. And it is not 'moderately easy' to set up a dual boot config, because you have to understand boot loaders, or in Mac's case, at the very least partition and system volumes. Setting up a dual boot runs a pretty high risk of data loss if done by someone like you, so this should be 'challenging' when written by you.