Grub will link to Ubuntu 16.04 but show Win10 together

[gwill83419]

I'm sure I'm doing something silly but not sure what. I'd like Grub to show both Ubuntu 16.04 or Win 10.
Any guidance appreciated.

Link:
http://paste.ubuntu.com/16661839/

Thanks
Graham.

[grahammechanical]

=================== Blockers in case of suggested repair The boot of your PC is in Legacy mode. Please change it to EFI mode.
Please use Boot-Repair-Disk-64bit (www.sourceforge.net/p/boot-repair-cd (http://www.sourceforge.net/p/boot-repair-cd)) which contains an EFI-compatible version of this software. ((use it from live-USB, not from DVD))


Windows 8 is installed in efi mode. Look at sda1. It has Windows efi boot files. But there are no Ubuntu efi boot files. Ubuntu is installed in BIOS/Legacy/CSM mode. That is the cause of this situation. And I do not think that boot repair can repair it because you are using Boot Repair on a 32 bit OS. Did you download the 32 bit version of Ubuntu. i386 ISO image? Did you install the i386 version of Ubuntu or the amd64 version?


Case when Ubuntu must be installed in UEFI mode
Having a PC with UEFI firmware does not mean that you need to install Ubuntu in UEFI mode. What is important is below:



if the other systems (Windows Vista/7/8, GNU/Linux...) of your computer are installed in UEFI mode, then you must install Ubuntu in UEFI mode too.
if the other systems (Windows, GNU/Linux...) of your computer are installed in Legacy (not-UEFI) mode, then you must install Ubuntu in Legacy mode too. Eg if your computer is old (<2010), is 32bits, or was sold with a pre-installed Windows XP.
if Ubuntu is the only operating system on your computer, then it does not matter whether you install Ubuntu in UEFI mode or not.




General principles
To install Ubuntu in UEFI mode:



Use a 64bit disk of Ubuntu. (Ubuntu32bit cannot be easily installed in UEFI mode (https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1025555). This is a problem if 32-bit UEFI is the only way your computer can boot, e.g. if you have a modern Intel Atom based laptop. In this case, you will need a complicated work-around (https://github.com/lopaka/instructions/blob/master/ubuntu-14.10-install-asus-x205ta.md).)
In your firmware, disable QuickBoot/FastBoot (http://ubuntuforums.org/showpost.php?p=12397979&postcount=9) and Intel Smart Response Technology (http://ubuntuforums.org/showpost.php?p=12460938&postcount=6) (SRT). If you have Windows 8, also disable Fast Startup (http://www.eightforums.com/tutorials/6320-fast-startup-turn-off-windows-8-a.html).
You might want to use an EFI-only image (https://help.ubuntu.com/community/Installation/FromUSBStick#Creating_an_EFI-only_image) to avoid troubles with mistakenly booting the image and installing Ubuntu in BIOS mode.
Use a supported version of Ubuntu. Support for UEFI appeared in 11.10, but has become more reliable in next versions. Support for UEFI SecureBoot (https://help.ubuntu.com/community/SecureBoot) appeared in 12.10 and 12.04.2.
Set up your firmware (BIOS) to boot the disk in UEFI mode (see the "Identifying if the computer boots the HDD in UEFI mode (https://help.ubuntu.com/community/UEFI#Identifying_if_the_computer_boots_the_HDD_in_ EFI_mode)" paragraph below)



https://help.ubuntu.com/community/UEFI

Regards

[gwill83419]

Thanks for your reply.
As far as I know I used the latest 64bit Boot repair ( Latest one with the Green background and the Very happy person).
Likewise I installed the 64 Bit version of Ubuntu 16.04.
I thought it strange when looking at the terminal as Boot Repair downloaded files that it mentioned i386. Hmm.
Anyway It looks as if I should:
Reset all Bios setting other than the changes you mention above.
Backup and reinstall 64bit Ubuntu.16.04.
Can you tell me. Do all versions of 64bit Ubuntu 16.04 support UEFI, I don't have to look for a special version?

Graham

[gwill83419]

Ok I've read all the links and answered my final question above.
Secure Boot: The computer has pre installed Win 10. Do I need to add Secure boot to Ubuntu 16.04 LTS 64bit? will I be able to dual boot without it?

Graham.

[oldfred]

How you boot install media is how it installs.
New UEFI systems have three boot modes, UEFI with Secure Boot, UEFI and CSM.
CSM - UEFI Compatibility Support Module (CSM), which emulates a BIOS mode

You separately choose how you boot flash drive. Some systems will not even let you boot flash drive with Secure boot on, and/or need a USB/flash drive setting changed to allow boot of flash drive. My desktop also has settings on USB boot for UEFI only, UEFI and CSM. I could only get flash drive to boot in UEFI mode with UEFI only boot mode, even though flash drive Ubuntu 64 bit installer is configured for both BIOS & UEFI boot.
But then how you install, may not match default boot mode in UEFI. So you have to check that matches.


Shows install with screen shots. Both BIOS purple accessibility screen & UEFI black grub menu screen
https://help.ubuntu.com/community/UEFI
Something Else or manual Install
http://www.dedoimedo.com/computers/dual-boot-windows-8-ubuntu.html

If install is on a gpt partitioned drive & you have an existing ESP - efi system partition, Boot-Repair's advanced mode has options to uninstall/reinstall grub. Be sure to boot in UEFI boot mode.
It really is just un-installing grub-pc(BIOS) and installing grub-efi-amd64(UEFI) which also changes a few other settings.

[gwill83419]

Thanks oldfred.