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Helpful answers
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Jun 5, 2012 6:39 AM in response to Seuoe1by Texas Mac Man,The Mac Pro has a PowerPC processor, so the max OS is Leopard 10.5.x.
Mac OS X 10.5 Leopard installation system requirements
http://support.apple.com/kb/TA24950
Leopard is no longer available at the Apple Store but may be available by calling Apple Phone Sales @ 1-800-MY-APPLE (1-800-692-7753).
If you can't obtain a retail install DVD from Apple, look on eBay or Google the installer part numbers to possibly find at an on-line store. Here's what to look for:
MB427Z/A Leopard 10.5.1 install DVD
MB576Z/A Leopard 10.5.4 install DVD
MB021Z/A Leopard 10.5.6 install DVD (single user)
MB022Z/A Leopard 10.5.6 install DVD (5-user family pack)
Installing Mac OS X 10.5 Leopard
http://support.apple.com/kb/HT1544
Mac OS X 10.5 Leopard Installation and Setup Guide
http://manuals.info.apple.com/en/leopard_install-setup.pdf
After you install the base 10.5, download & install the 10.5.8 combo update at http://support.apple.com/downloads/Mac_OS_X_10_5_8_Combo_Update
The DVD should look like this
Caution - Leopard does not support classic mode. So, if you currently open OS 9 apps in classic mode, you won't be able to do this if you upgrade to Leopard.
Cheers, Tom
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Jun 5, 2012 9:20 AM in response to Texas Mac Manby Limnos,Texas Mac Man wrote:
The Mac Pro has a PowerPC processor, so the max OS is Leopard 10.5.x.
The Mac Pro has an Intel processor, so you can upgrade beyond Leopard. It would help in this case to have exact specifications on the computer because the level to which you can upgrade will depend upon the specifics.
To get more information about your computer, go to the Apple in the upper left corner of any window, then "About This Mac", then "More Info..." Copy and paste the information here, but omit the serial number and Hardware UUID (if present).
You can almost certainly upgrade to Snow Leopard and possibly even Lion. Some of this will be determined by your hardware, and some by the extent to which you are willing to pay for new application versions if you run old software.
General post on upgrading from Tiger to Lion - https://discussions.apple.com/message/18281569
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Jun 7, 2012 6:23 PM in response to Seuoe1by a brody,Make sure you have a Mac Pro, and not a PowerMac G5. To tell the difference go to Apple menu -> About This Mac. If it is a Mac Pro, you can go to 10.5, 10.6, or 10.7 (with 2 GB of RAM minimum). If you have a PowerMac G5, the max you can get to is 10.5.8.
