0

Well, let me explain my situation:

I have a Lenovo G40-70 laptop, which came initially with Windows 8 as operational system, but then I upgraded to Windows 10. I tried to install Ubuntu 14.04, and I did it. In the tutorial I was following, the guy told to install efibootmgr to change the boot order, to put Ubuntu at the first position instead of Windows Boot Manager. Curiously, Ubuntu was already at the first position, so I didn't do anything. I restarted my computer, and it was working fine. I had options to boot both to Windows Boot Manager and Ubuntu. I picked Windows first just to test, and it was everything ok. But my surprise was when I restarted my computer again to try Ubuntu. It just booted automatically to Windows 10. I tried to use the test version in the flash disk again to access efibootmgr, but now, Ubuntu has just disappeared from the list, so i can't configure it again to change the boot order. What should I do?

PS: I'm a complete noob with Linux

Jefferson Carvalho
  • 123

2 Answers2

2

You have to disable fast startup in Windows:

  1. Go to Control panel -> All control panel items -> Power options -> Choose what the powers button do
  2. Click on Change settings that are currently unavailable
  3. Uncheck Turn on fast startup
  4. Uncheck Hibernate
  5. Restart entering Bios/UEFI
  6. Move Ubuntu on top of Windows
  7. Save and restart

Now everything should work!

MKay
  • 935
1

If you cannot see Ubuntu in the boot menu, try this command as an Administrator from the Windows:

bcdedit /set "{bootmgr}" path \EFI\ubuntu\grubx64.efi

For information regarding dual boot with windows 10 visit this link.

Shishir Anshuman
  • 121
  • 5