![]() Use the keyboard combination Ctrl + X to exit nano. Rebuild the BCD in Windows by using the Bootrec.exe tool. ![]() Use the keyboard combination Ctrl + O and after that press Enter to save the file to its current location. To fix Windows 10 boot configuration data is missing, you can take the following solutions. Then run the update-grub command and reboot: sudo update-grub In Use Bootrec.exe in the Windows RE to troubleshoot startup issues (applies to Windows 7 and Windows Vista) they say to use Bootrec.exe with options /FixMbr /FixBoot, but when I type 'bootrec.exe /FixMbr' in a command prompt, Windows says: 'bootrec.exe' is not recognized as an internal or external command. Make sure that the GRUB_TIMEOUT value there is set to a value larger than zero, for example GRUB_TIMEOUT=10. sudo nano /etc/default/grubĬomment out the line that says GRUB_TIMEOUT_STYLE=hidden by preceding it with a # character. Check to see if this setting is enabled by GRUB_TIMEOUT_STYLE=hidden, and if it is enabled open the /etc/default/grub file for editing in nano text editor and disable it. There is a setting in /etc/default/grub called GRUB_TIMEOUT_STYLE=hidden which prevents the GRUB menu from showing during the timeout period unless you press the Esc key. Using this tool, you can restore grub by following the instructions here. Set the Timeout to a reasonable amount of. I have not used Super Grub2 Disk personally, but I hear it is an incredibly useful tool. Start typing System Configuration and double-click the System Configuration app when it appears. I would try this first instead of grub2win, as there is less risk involved if something goes awry. Be sure to follow the instructions carefully on the project's page if taking choosing method.Īnother method instead of grub2win is Super Grub2 Disk, which is a live CD that allows you to boot into a variety of operating systems. This allows you to boot grub2 from your Windows EFI firmware by making edits to the boot code. If the above fail, you could try installing grub2win. chrooting into your installed Ubuntu system from the live CD and then reinstalling grub manually). Try following the steps detailed in Enkouyami's answer (i.e. In Windows, I also entered the command bcdedit /set path \EFI\ubuntu\grub圆4.efi. Pressing F8 and F12 also does not help.Ĭan anyone help me bring up the GRUB boot menu? If you can see this you can either chose it or chose the Something else option. So, I found out that Ubuntu is installed. If you have booted into UEFI you will see the Install alongside Windows option. Initially I thought Ubuntu has not been installed, but when I plugged in the USB drive and wanted to install Ubuntu I saw an option of reinstalling Ubuntu on my machine. After installation, the boot menu did not show up. Then I created a new partition for Ubuntu and installed it. Following that, enter these commands: diskpart. After opening the next window, go to Troubleshoot > Advanced options and select the Command Prompt option. To install Ubuntu, I chose the option install alongside Windows 10 or something similar to this. You need to click the Restart now button. I have installed Ubuntu 15.10 alongside Windows 10 with UEFI.
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