Windows

Windows 8

1 - Go to the Search Charm How to Search in Windows 8

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Start > run > cmd > systeminfo

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WinXP Home Edition

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1. Open Macintosh hard drive on desktop, find Application folder and open it.
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2. Scroll Down and open Utilities folder.
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3. Open the console window in the Utilities folder.
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4. In the console, expand the directories as shown below, find and click on OSInstall.custom, you will find the OS install date as shown below.
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Alternate Method

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1. Open the console window in the Utilities folder, as outlined above.
2. Navigate to /var/log, then click on install.log
3. Scroll all the way to the top of the list, until you see a series of text that says "Install Mac OS X Lion"
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4. The date next to the text is the install date.

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