As your computer starts up, it may display a logo stating which operating system it is running; however you may want to find out a precise version number.
This article helps you to identify which operating system is installed on your computer.
Applies to the following Sophos product(s) and version(s)
Not product specific
In the corner of the computer screen you may have one of the following icons, either the bottom-left or top-left corner. Click on the icon that matches what you see on your computer.
*Blue screenshot shows the Windows 8 operating system if you move the mouse pointer into the bottom-left corner of the Windows 8 Desktop. Click here for a screenshot of Windows 8 Start screen. Yellow screenshot shows Windows 8.1 which added an icon to the bottom left corner of the Desktop.
You may have an uncommon operating system or an operating system such as Linux. Or you may have an operating system with a customized desktop. First read through the instructions for Windows and then Mac and attempt to identify the steps which work with your computer.
If you are still having trouble you can:
In all versions of Windows you can open detailed system information as follows:
From the Mac menu bar select the Apple icon and then click on 'About This Mac'...
A new window will open which shows the exact version of Mac OS X that is installed...
In the example above the version of Mac OS X is 10.7.3
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