Change OS boot priority

Hello, how do make windows my default boot OS after installing Zorin?

It did work, only now I don't see the boot menu anymore. Can I still get the boot menu with a countdown and Windows as Primary option?

If you can get into Windows, perhaps NeoSmart's EasyBCD might be better for you:

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Yes. First, set the ''ubuntu'' Entry in the BIOS Boot Order back at the first Position. Then start in Zorin and open the Terminal. Type there:

sudo nano /etc/default/grub

Press Enter and type in Your Password. Then You should see this:

The important Thing is here the white Block. There stands in the first Line GRUB_DEFAULT=0 and the 0 is what You have to change; that is the entry what starts be default when the Countdown is over. Here You have to change the Numer to the Place of the Windows Entry. I mean, in the Grub Menu, You have the List of OS's. And there You have to count on what Position Windows is. BUT You have to count with 0 first. So, 0 is Zorin the first Entry and so on.

And then it is for Example GRUB_DEFAULT=2 and then press ctrl+o to save the Change, Enter to confirm and ctrl+x to exit. Back in the normal Terminal Overview You have to type in sudo update-grub because only then it will affect. So, don't forget that!