No dual boot on Sony VAIO SVS1311F3EW

[riccardo10]

Hi all,

I've tried both installing first Windows 10 and then Ubuntu 14.04 and viceversa, first Ubuntu then Windows.

What happens is that both cases, is that it only boots Windows 10 and never show any sign of ubuntu.

I've tried boot repair in both cases in the EFI partition with no success.
http://paste.ubuntu.com/12816230/

http://paste.ubuntu.com/12840671/

I've even tried changing from Windows the path with bcdedit to EFI\ubuntu\ with no success...

How can I fix the dual boot?

Cheers,
Riccardo.

[oldfred]

I think evey Sony we have seen will not directly boot Ubuntu.
They modify UEFI to also use description which is not allowed in UEFI spec.
And the description must be "Windows".
But UEFI has a backup hard drive boot entry and with Sony that entry will usually work.

You have to copy /EFI/ubuntu into /EFI/boot and rename shimx64.efi to bootx64.efi. And then add an UEFI boot entry for the hard drive.

Details, also in link in my signature:
http://ubuntuforums.org/showthread.php?t=2234019
http://askubuntu.com/questions/150174/sony-vaio-with-insyde-h2o-efi-bios-will-not-boot-into-grub-efi
Sony, HP & others:
http://askubuntu.com/questions/486752/dual-boot-win-8-ubuntu-loads-only-win/486789#486789
Rename bootx64.efi
https://askubuntu.com/questions/597052/can-not-boot-anymore-after-a-boot-repair


One Sony user

The trick was to manually copy the ubuntu Boot directory in place of the \EFI\Boot Directory, and rename shimx64.efi to \EFI\Boot\bootx64.efi (not \EFI\Microsoft\Boot\bootmgfw.efi )
Dual booting with Windows 8 on a Sony Vaio
http://ubuntuforums.org/showthread.php?t=2153589

Sony Vaio Pro 13 initrd issues - turn off UUID and libata.force=noncq splash parameter needed
http://ubuntuforums.org/showthread.php?t=2189052