When two operating systems are installed on the computer, a selection window appears during boot, in which the user can determine which version of the OS to run. Correct setting of the choice of the operating system allows you to make the work on the computer more comfortable and safer.
Instructions
Step 1
If you have installed a second Windows OS on your computer, then at system start you need to select the one you need and wait 30 seconds before it starts, or press Enter. This is quite inconvenient, so the choice of the operating system and its start parameters must be configured correctly.
Step 2
Open Control Panel: "Start" - "Control Panel". Find and open the line "System", select the "Advanced" tab in the window that opens. On it, find the "Startup and Recovery" section and click the "Options" button.
Step 3
You will see a window for operating system boot settings. If you wish, you can completely remove the operating system selection window at startup by unchecking the "Display a list of operating systems" item. In this case, the system that was loaded by default will be loaded. In the line "Operating system loaded by default", you can choose any OS you need.
Step 4
Despite the possibility of the above option, it is better not to turn off the selection menu, even if you are using only one operating system. In case of problems with the main OS, you can always boot from the second one, save important files and calmly start restoring the main OS. With the selection menu disabled, you will not have this opportunity.
Step 5
In order not to wait 30 seconds for loading, change the time in the line "Display the list of operating systems" from 30 seconds to 3. Three seconds is enough to select another OS if necessary. In the line "Display recovery options" leave 30 seconds. You can bring up a menu of recovery options by pressing F8 at system startup. If the operating system refuses to boot for some reason, select Boot Last Known Good Configuration from the list of recovery options. This is often enough for a successful download.
Step 6
In the event that you have Linux installed along with Windows, the bootloader functions are usually taken over by Grub, the most common Linux bootloader. To customize the boot - for example, choose which OS will boot by default, you can go in two ways. The first is to edit the grub.cfg configuration file. The specific configuration options depend on the Linux version, check the net for them. And the second, easier way is to install the startupmanager program. It will help you graphically configure the loading of operating systems.
