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f.sardis
June 12th, 2014, 06:31 PM
So the laptop is an SVZ1311C5E with UEFI turned on. It has two SSD set to GPT from Windows 8.1
Windows is installed on the first SSD and I want to install 14.04 x64 on the second SSD with the boot manager on the Windows SSD so I can select what to boot from GRUB.

I am using an external USB DVD drive because the laptop doesn't have one. Ubuntu displays the message Could not open "\EFI\BOOT\fallback.efi": 14
and then proceeds to the usual menu for running a demo or installing. I choose to install and when it comes to partitioning, it tells me that no other OS was detected and that it plans to wipe the disk and install.
Problem 1) which disk of the two is it planning to wipe? I am assuming it wants to wipe the first SSD which has Windows so no thanks I will partition manually. Which takes us to the second problem.
Problem 2) if i partition manually and since it is completely oblivious to the existence of Windows on the first SSD, I am afraid that if I put GRUB on the first SSD, it will wipe Windows boot record and I will lose Windows anyway.

So what is the recommended solution in this case? I get the impression that ubuntu detects the system is running UEFI but fails to find the UEFI boot on the DVD so it falls back to Legacy which is what makes it blind to the Windows installation. It sees the UEFI partitions on the first disk but it doesn't see the OS installed. I checked the DVD and the .img file for problems and they are both clean. Secure boot is disabled as reported by Windows and there is no option in the BIOS to change it anyway.

Thanks in advance for any ideas.

oldfred
June 12th, 2014, 07:40 PM
Sony's are not particularly friendly to dual booting.

Better to plan to install grub to sdb or same drive as Ubuntu. You can have an efi partition on every drive, UEFI will include all drives, and grub can easily chain load to the Windows in the other drive. The issue is that Sony will not let that work like it should and work arounds are required.

Even if a second drive be sure to have Window's fast boot or always on hibernation off.
Do you also have Intel SRT? Or are SSD's configured as RAID

Lots of links in the link in my signature. Those links all have screen shots showing install.
You will need to use Something Else as that is only option that lets you choose where to install grub boot loader and you want the efi partition on sdb or Ubuntu drive.

Could not open "\EFI\BOOT\fallback.efi"
https://bugs.launchpad.net/ubuntu/+bug/1241824
Some just add another copy of grub or shim.

Some other threads on Sony, your UEFI may be similar.

Sony Vaio Pro 13 - To get into UEFI press this "Assist" button BEFORE starting
http://askubuntu.com/questions/458413/how-to-fix-dual-booting-windows-8-and-ubuntu-14-04-on-a-sony-vaio
Issues on rename
https://bugs.launchpad.net/boot-repair/+bug/1315490

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 & Ubuntu 13.10
http://www.slideshare.net/slideshow/embed_code/27418512
Sony Vaio Pro hard coded to only boot "Windows Boot Manager"
http://ubuntuforums.org/showthread.php?t=2196415
sudo efibootmgr -c -L "Windows Boot Manager" -l " \EFI\ubuntu\shimx64.efi"
http://ubuntuforums.org/showthread.php?t=2200818
Sony Vaio Pro SVP-1x21 - Arch but similar settings needed for any Linux Haswell
https://wiki.archlinux.org/index.php/Sony_Vaio_Pro_SVP-1x21
Sony Vaio Pro 13 initrd issues - turn off UUID and libata.force=noncq splash parameter needed
http://ubuntuforums.org/showthread.php?t=2189052