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Aluminum Unibody MacBook Q&A - Published November 3, 2008
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What version of MacOS X is pre-installed on the "Unibody" MacBook?
The "Unibody" MacBook models -- the MacBook "Core 2 Duo" 2.0 13" (Unibody) and MacBook "Core 2 Duo" 2.4 13" (Unibody) -- shipped with MacOS X 10.5 "Leopard", build number 9F2114.
For more on particular build numbers shipped with particular Macs, please refer to "MacOS: Builds Included with Intel Macs" from the Apple Support Site.
For the maximum supported version of MacOS X for all "recent" -- G3 and later -- Macs, please refer to the Maximum Supported MacOS listing.
Can the "Unibody" MacBook run MacOS 9/Classic applications?
No. Apple provides no support for running MacOS 9 or the "Classic Environment" on Intel-based Macs like the "Unibody" MacBook. Intel-based Macs rely on the "Rosetta Universal Binary Translator" to run software for MacOS X for PowerPC, and this emulator cannot run "Classic/MacOS 9" applications.
Additionally, the "Unibody" MacBook models shipped with MacOS X 10.5 "Leopard", which also provides no support for "MacOS 9/Classic" applications.
If you have a mission critical application that only runs on MacOS 9, you likely would be best served by maintaining a PowerPC-based Mac. However, you may also be interested in reading "Are there any third-party programs to run MacOS 9/Classic applications on Intel Macs?" from the MacOS 9/Classic Support Q&A.
Can the "Unibody" MacBook run Windows?
Yes. For those unfortunate ones condemned to use Windows, the Windows on Mac Q&A provides answers for just about everything you need to know about running Windows on the "Unibody" MacBook or any other Intel-based Mac.
Can the "Unibody" MacBook run Linux?
Yes. All Intel-based Macs are capable of running a number of Intel-based distributions of Linux through Apple Boot Camp or by using "virtualization".
For more on Boot Camp and Virtualization, please refer to the Windows on Mac Q&A.
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