How to do in zaluska menu to primarily run Windows, and not tsentos?

Hi all. I installed Центос7 next to Windows 8.1. at first I had the problem that after successful installation Tsentosa the boot loader menu was only the Tsentosa, and Windows no. It was necessary to return to the menu loader, Windows 8.1. Returned with grief in half like this:

sudo vim /boot/grub2/grub.cfg

menuentry "Windows 8" {
set root='(hd0, 1)' #here regulated second number thanks to the advice of How to repair Windows 8.1?
chainloader +1
}

Windows in the boot menu, seen, and run normally. Only now there was another problem, I want to start first not Tsentos 7 and Windows 8.1, and of course your choice of operating system below left))). The question is, how can it be done?

Addition to what I tried to do, (Google):
1) grub-customizer, not seen this team, and even root was unable to install it, can't find this setting.
2) update-grub is not working. writes something like that: bash: update-grub command not found.
3) what to do not know. I count on your help
March 23rd 20 at 19:18
2 answers
March 23rd 20 at 19:20
Solution
sudo grub2-set-default "Windows 8"
thanks for the response. I will try to write this Kandu - mark commented on March 23rd 20 at 19:23
Now that's a professional answer, not that some!

thanks for the response and the answer
helped me your answer. - mark commented on March 23rd 20 at 19:26
Another tip - learn English and opportunities Google.ru.
Then children are valid questions to ask will not have... - carolyn.Kovac commented on March 23rd 20 at 19:29
@carolyn.Kovac, here you won't believe when I searched for help in Google, no information in Google about no command... eating the Internet and forums why complicate yourself and others - help!. that is what the forums! and the question really is not for me, for a very small specialist. I always help if know if you do not know, then do not agree well have the opportunity to help me, why bother me with that. even in this case. am I not right????? - mark commented on March 23rd 20 at 19:32
@carolyn.Kovac, then just as important as those guys sitting in the campaigns for the positions of those heads of Department, gaining specialist trainees, and then wonder what kind of vegetables. while they themselves do not want help. - mark commented on March 23rd 20 at 19:35
You know what I searched for in google?
If you know English you will understand: grub2 change default menuitem. - carolyn.Kovac commented on March 23rd 20 at 19:38
@carolyn.Kovac, I don't even know what to look for grub and not grub2. it was my first time - mark commented on March 23rd 20 at 19:41
March 23rd 20 at 19:22
Well, edit the grub configuration tried? Google for a couple of seconds
Configuring grub
honestly, I don't know what to write. I would just give the command in terminali specific - mark commented on March 23rd 20 at 19:25
@mark, why do you then CentOs with this approach? The link, everything is clear, if thoughtfully to read. - Leta commented on March 23rd 20 at 19:28
@mark, You gave a link to the documentation is adequate to help! But to do it for you it not help, and work. - Leta commented on March 23rd 20 at 19:31

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