Can't control which OS to boot

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HP LT came with Win10 OS. Created a partition and installed XP on it and it became the boot partition.
I am unable to change the boot partition from XP to 10.
How do I force the computer to ask me which OS I want to boot?

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a. Open command prompt from Windows recovery option menu.

Type diskpart at the command prompt.

b. At the DiskPart prompt, type in list disk. You will see the list of disk currently attached to your computer.

c. Now type in select disk n, where n is the disk number. In this example, disk 0 is selected.

d. Now that correct disk is selected, type in list partition to get a list of all the partitions on that disk.

e. To select the partition you want to set as active, type in select partition n, where n is the partition number.

f. Now that you have selected the disk and partition, mark it as active by just typing the word active and pressing Enter. Now the partition is set active.

g. Exit from the command prompt and run startup repair.

That should be it.
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Thank you Ambucias. I followed your instructions but it didn't work. Your last point, to type the word active and press enter, doesn't work. The computer put an asterisk in front of the partition that is currently active, i.e. the XP partition and refuses to allow me to make the Windows 10 partition active.
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Perhaps that this article will help you
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