Q: How do I determine the serial number of a computer?
Answer
Windows
Open a command prompt (by choosing the Command Prompt item from the Start menu, or typing cmd in the Start menu's "Run" box), and type the following:
wmic bios get serialnumber
Note: Windows 10 users may navigate to the Command Prompt by right clicking on Start button, or by typing "cmd" on Start screen to search it.
Related Supported Vendor links "How to find Serial Number or Service Tag" :
Lenovo how to find Serial Number
Mac OS X
Go to Utilities. Open the Terminal application and type:
ioreg -l | grep IOPlatformSerialNumber
Vendor Link : How to find Apple Serial Number
Linux
Open a shell and type:
sudo dmidecode -t system | grep Serial
Note: The user will need to have root access to the system.