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8

Don't do anything: apparently your Windows isn't installed in UEFI mode. (This is the first time on this site I've told someone not to do anything!) :-)


5

To elaborate a bit on Fabby's answer: Modern EFI/UEFI-based computers can usually boot either in native EFI/UEFI mode or using a feature called the Compatibility Support Module (CSM), which enables them to boot using older BIOS-mode boot loaders. This latter mode is often called "legacy mode," so it has three names: BIOS, CSM, and legacy; all mean the same ...


3

I have Win8.1 and Ubuntu 14.04 dual booted on a Toshiba S50-B. Here are some things that you should try that worked for me: Change from UEFI boot to CSM Boot. This is important as the bios will on boot UEFI compatible OSs unless it's in CSM mode. Change the boot priority to try booting from USB before it tries to boot from HDD or SSD. Otherwise your bios ...


1

Let me write about some of problems to help other people who might encounter the same issues. My computer came with Windows 8 pre-installed so I shrunk the Windows partition to make room for Ubuntu. That it how it works for the last year. After the second reboot in Windows 10 upgrade the computer did not boot any more. The grub only displayed a grub rescue ...


1

I'm afraid you've accidentally deleted Windows from your computer. In your Boot Repair output, lines 57-61 show your partitions, which include an EFI System Partition (ESP) to hold your boot loaders (/dev/sda3), a 14GiB root (/) partition (/dev/sda1), a /home partition (/dev/sda4), and a swap partition (/dev/sda2). There are no Windows partitions among that ...


1

The EndEntire error: premature end of file and EndEntire error: cannot load image messages might indicate a problem that needs to be fixed from the Windows side -- namely, damage to the Windows boot loader. (OTOH, if you have a backup of your EFI System Partition, or ESP, from before the error occurred, you may be able to recover by restoring that backup. ...


1

Normally you can get a boot manager menu by pressing Esc, Enter, or a function key as you start the computer. (Which keypress does this varies from one machine to another.) I've heard of cases where this functionality stops working for some reason, though -- it sounds to me like the cause is really a firmware bug. Updating the firmware or resetting it to the ...


1

The problem is caused by the fact that a part of the GRUB boot loader remains installed on the computer, and is being launched by default. Unfortunately, the way Ubuntu sets up GRUB causes it to rely on files located on the Ubuntu partition, and since you've deleted that partition, those files effectively no longer exist. There are several possible ...


1

You need to install a proprietary driver for you video adapter. Run in terminal sudo apt-get install nvidia-346 nvidia-prime and reboot.


1

It shouldn't screw your your dual boot, but in my case it did. However, I was able to restore everything without data loss. My report about it can be found here (look down at the comments) Here is a copy/paste of my issues Let me write about some of problems to help other people who might encounter the same issues. My computer came with Windows 8 ...



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