Open Notepad
Type the INI file content using sections and key-value pairs
Use section headers in square brackets, such as [SectionName]
Add settings in the format Key=Value
Separate different sections with blank lines if needed
Click File
Click Save As
In the File name box, enter a name ending with .ini
In the Save as type box, select All Files
Choose a folder to save the file
Click Save
Reopen the file in Notepad to edit it later if needed