Updated my Mac Pro from10.5.8 to Snow Leopard then to 10.6.8, but want to update to Yosemite but can only find 10.10.5 which requires 10.10.0 first. Is this available?
Mac Pro, Mac OS X (10.6.8)
Use the App Store to purchase Yosemite. That will install it for you.
What model Mac Pro? Only the 2008 and later can go to Yosemeite without a hack
3. Upgrade to OS X Yosemite for free.
Visit the OS X Yosemite page on the Mac App Store. Click the download button, and follow the onscreen instructions to begin your upgrade. If you don’t have broadband access, you can upgrade your Mac at any Apple Retail Store.
It's a Mac Pro 3,1. The Mac App Store keeps showing Yosemite 10.10.5 which requires Yosemite 10.0.0 first - which I can't find available.
It sounds like you are trying to install the 10.10.5 combo update.
You have to go to the Mac App Store which was added by the last update to 10.6 and download the installer.
is yosemite 10.10.0 available - need this to update to 10.10.5, currently using 10.6.8 ?
