Change the time of display of the list of operating systems and recovery options in Windows 10/8
On a multi-boot computer, Windows displays all operating systems that have been installed on the computer for a certain period of time during boot time before it boots into the default operating system as soon as the default time of 10 seconds has expired. You can change this period if you wish. This article shows you how to change the time period to display the list of operating systems and recovery options in Windows 10/8.
To change the display time of the operating system list, open Computers in File Explorer. Click System Properties.