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I recently have installed ubuntu in my computer, alongside windows 10. The installation went fine (from an USB file, downloaded from Ubuntu.com ) but when i try to restart my computer starts automatically windows 10 and doesn't show me what OS I can choose. I've tried turning off fast startup, but it doesn't seem to work. Could you help me? Thank you.

Joan G
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  • so it boots right into Ubuntu if so open up a terminal by pressing Ctrl + Alt + T and type in this command sudo update-grub – Neil Nov 09 '15 at 20:38
  • How and where should I type that? Do i need the USB again? – Joan G Nov 09 '15 at 20:41
  • It boots right to windows, not ubuntu. I want to choose it! – Joan G Nov 09 '15 at 20:45
  • @Neil It boots right to windows, not to ubuntu. Should i disable UEFI? I didn't disable it when i installed ubuntu. – Joan G Nov 09 '15 at 21:02
  • Do not turn off UEFI. What brand/model system. Many will not auto boot any entry that does not say Windows. But there are work arounds. http://askubuntu.com/questions/486752/dual-boot-win-8-ubuntu-loads-only-win/486789#486789 and: https://askubuntu.com/questions/597052/can-not-boot-anymore-after-a-boot-repair – oldfred Nov 09 '15 at 21:11
  • @oldfred Acer Aspire V3-572G-70Q8. Came with windows 8.1 and i updated it to windows 10. – Joan G Nov 09 '15 at 21:17
  • @oldfred Why is so dificult to install dual boot on windows 10? – Joan G Nov 09 '15 at 21:23
  • BIOS was not always easy, it depended on system. UEFI complicates it now as it is both BIOS & UEFI and Secure boot and many more settings in UEFI. But your issue is Acer. Acer requires you to set password and then drill down to Ubuntu/grub efi boot files and set trust. Details on password & trust setting: http://askubuntu.com/questions/597213/bootable-device-not-found-after-clean-install-of-ubuntu-14-04-uefi – oldfred Nov 09 '15 at 22:07

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Hold 'Shift' at startup of your computer. It should bring you to the grub menu. If you want to permanently change it, go into Ubuntu and go to terminal, type in:

sudo nano /etc/default/grub

Go to the line where it says:

GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true

And change the number 0 to 10 or what you prefer (this is the time it stays on the grub menu and when time's up it automatically boots into the selected option, but i do recommend 10 though). Change true to false and then save the file and quit it. After editing the file, type in the terminal:

sudo update-grub

And restart to see if it worked. Please say if it didn't work!

Acrylic
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