How to upgrade macbook OS X Yosemite 10.10.5 to 10.15.6

macdonald100 Said:

"How to upgrade macbook OS X Yosemite 10.10.5 to 10.15.6"

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About Updating a Mac:

Determining which Update(s) will Install:

A. Verify Compatibility:

Start Here: Learn About Compatibility and how to Identify your Specific Mac Model - Apple Support

B. How to Verify:

I. Reveal your Model:

What is the Model of your Mac? To find out...

1. Go to: Apple menu
2. Click: About this Mac
3. View: Second Line-Down

then...

II. Compare the Results:

See if the Model you found is shown here: macOS Catalina 10.15 - Hardware Requirements - Apple Support

III. If Compatible:

Back Up your Mac First:  Be certain you Create a Time Machine Backup of your Mac, so that way you can have something to restore your Mac from, should anything go wrong with the reconfiguration.