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I was trying to change default boot option for my laptop(ubuntu and Windows). I can not update the grub which is the last step. When enter the command "sudo update-grub" i get this error "Searching for GRUB installation directory ... found: /boot/grub /etc/default/grub: line 1: ^Y: command not found".

I followed these instructions, How do I set Windows to boot as the default in the boot loader?

I installed boot-repair tool and this is my URL: http://paste.ubuntu.com/11907417/

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Your /etc/default/grub has a stray ^Y in it:

=================== /etc/default/grub :

^Y
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

Just delete that line and you should be fine. You can use the following command to delete line 1 (since that's where the error is):

sed -i.bak 1d /etc/default/grub
  • Thanks. That solved my current problem, but even though after updating grub I am not able to boot in windows as default OS. The prompt still selects Ubuntu. – algOs Jul 27 '15 at 3:03

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