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How to check OS install dates for quarantined statuses.
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Check OS Installation Dates on Windows
Windows 8
1 - Go to the Search Charm How to Search in Windows 8
2 - Search "cmd".
3 - Select the "Command Prompt" App.
4 - Type "systeminfo" and hit "enter".
WinXP Pro, Windows Vista and Windows 7
Start > run > cmd > systeminfo
WinXP Home Edition
Start > run > hcp://system/sysinfo/sysinfomain.htm -> View the status of my system hardware and software
Under "System Software" the operating system should be listed with the install date under "Date Created"
Mac OS X Snow Leopard (10.6)
- Open Macintosh hard drive on desktop, find Application folder and open it.
- Scroll Down and open Utilities folder.
- Open the console window in the Utilities folder.
- 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.
Alternate Method
You can type vi /var/log/OSInstall.custom on the Terminal window.
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(:q to quit vi) |
Mac OS X Lion (10.7)
- Open the console window in the Utilities folder
Hold down the Windows Key and Press R on your keyboard.
- Type in cmd and Press CTRL + SHIFT + ENTER.
- Type in systeminfo and Press ENTER.
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Check OS Installation Dates on macOS (Yosemite and El Capitan)
- Open the console window in the Utilities folder, as outlined above.
- Navigate to /var/log, then click on install.log
- Scroll all the way to the top of the list, until you see a series of text that says "
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- OSInstaller"
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- The date next to the text is the install date.
Check OS Installation Dates on macOS (Catalina and Above)
- Open the the console window application found in the Utilities folder, as outlined above.
- Navigate to /var/log, then click on install.log
- Scroll all the way to the top of the list, until you see a series of text that says "Install Mac OS X Mountain Lion"
- The date next to the text is the install date.
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- Applications > Utilities > Console
- In the sidebar select "Log Reports"
- In the top half of the window select "install.log"
The lower half of the log window scroll up to the earliest possible date to see the install date.
Info title Note The earliest date will either be when the computer was first set after being purchased or from the last clean install. If a computer is upgraded there will be an install log on the date of the install recording the upgrade.
