How to Change Default Operating System in Windows 10.So without wasting any time let’s see How to Change Default Operating System in Windows 10 with the help of the below-listed tutorial. It’s possible you may power on your PC but forget to select the OS at startup, hence the default one will automatically be booted, in this case, it will be the OS you use more often. Now choosing default operating system is very important as you may use one OS more than the other and that is why you need to select that particular OS as your default OS. For example, if you have installed Windows 10 and Windows Technical Preview on a single system then at the boot screen you will have 30 seconds to choose which one you want to run before the default one, say in this case, Windows 10 is automatically selected after 30 seconds. How to Change Default Operating System in Windows 10: If you have installed more than one operating system then one of them is set as default which means at startup you will have 30 seconds to choose an operating system before the default one is automatically selected.
