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I've just installed Ubuntu 16.04 alongside Windows 10. After I completed the installation of Ubuntu and restarted, Windows boots as usual ... just as if Ubuntu wasn't installed at all.
I've tried the boot-repair method to reinstall GRUB, but it didn't work ! What should I do ?

The hard drive is formatted with GPT partition table - the computer is running in UEFI mode.
cl-netbox
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ziad emad
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2 Answers2

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You have to disable Windows fast boot and hibernate.
Open command prompt as administrator and execute: 

powercfg /h off

Then open Windows Control Panel -> Power Settings.
Enable show hidden settings and disable fast startup.

Shutdown the computer completely - do not reboot.
Boot into BIOS and select Ubuntu as the default OS.
Now you can select what to boot from GRUB menu.

cl-netbox
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  • Windows fast boot is already disabled .... when i boot into BIOS i don't find any thing .. just the windows boot manager besides the hard drive , CDrom .... etc – ziad emad May 12 '16 at 16:28
  • @ziademad : Please check the UEFI settings - there should be an Ubuntu entry ... maybe you have to set a password before to access these settings ... every BIOS is different, so I can't give exact instructions here. – cl-netbox May 12 '16 at 16:32
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1.Go to the bios(usually by pressing f2 immediately after pushing the power button).

2.Go to the boot menu and set the boot mode to "UEFI OS & CSM OS".

Also disable secureboot/fastboot if it is enabled.

ShuaibKunji
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