Perhaps you have 10.5.8 instead of Snow Leopard.
Mac OS X 10.6.4 and Mac OS X Server 10.6.4 are available via Software Update and via Apple’s support downloads page as well; both are available as straight updates or combo updates.
Upgrading to Snow Leopard
Download macOS Mojave 10.14.4 Combo Update The macOS Mojave 10.14.4 update adds support for Apple News+, includes bug fixes and improvements, improves the stability and reliability of your Mac, and is recommended for all users. The combo updater will work on all versions of Mac OS X 10.6. For example, if you are still using Mac OS X 10.6.3 you can use the combo updater to go directly to 10.6.6 rather than install the updates in between. The standard version relies on having the proper subsequent version of Mac OS X installed, in this case 10.6.5. Download macOS High Sierra 10.13.6 Combo Update. Download macOS Sierra 10.12.6 Combo Update. Once downloaded, double-click to install. These will only update an existing install of either Sierra or High Sierra. Or are you trying to upgrade your Mac from an older OS to a newer one, if so. How to upgrade to macOS Sierra - Apple Support.
You can purchase Snow Leopard through the Apple Store:Mac OS X 10.6 Snow Leopard - Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mavericks if your computer meets the requirements.
Parametric cad software. Snow Leopard General Requirements
1. Mac computer with an Intel processor
2. 1GB of memory
3. 5GB of available disk space
4. DVD drive for installation
5. Some features require a compatible Internet service provider;
fees may apply.
6. Some features require Apple’s iCloud services; fees and
![Apple 10 6 4 Combo Update Apple 10 6 4 Combo Update](https://cdn.vox-cdn.com/thumbor/pe17Lq4GNAEW-mbqQtevQE-YrAI=/28x0:612x389/1200x800/filters:focal(28x0:612x389)/cdn.vox-cdn.com/assets/933860/maxosx_1073_comboupdate.jpg)
terms apply.
Upgrading to El Capitan
You can upgrade to El Capitan from Lion or directly from Snow Leopard. El Capitan can be downloaded from the Mac App Store for FREE.
Upgrading to El Capitan
To upgrade to El Capitan you must have Snow Leopard 10.6.8 or Lion installed. Download El Capitan from the App Store. Sign in using your Apple ID. El Capitan is free. The file is quite large, over 5 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
Macs that can be upgraded to OS X El Capitan
1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
7. Xserve (Early 2009) - Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
Are my applications compatible?
Apple 10 6 4 Combo Updates
See App Compatibility Table - RoaringApps
Upgrading to Lion
If your computer does not meet the requirements to install Mavericks, it may still meet the requirements to install Lion.
You can purchase Lion at the Online Apple Store. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
Lion System Requirements
1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
Apple 10 6 4 Combo Update Download
or Xeon processor
2. 2GB of memory
3. OS X v10.6.6 or later (v10.6.8 recommended)
Apple 10 6 4 Combo Updater
4. 7GB of available space
5. Some features require an Apple ID; terms apply.
Jan 22, 2016 1:27 PM