Can't boot into Ubuntu (Kubuntu) after installation (Windows dualboot)

[martin_ruzek]

Hi, I have a problem booting into my freshly installed Kubuntu OS (flavor of Ubuntu). I would it like to dual boot with Windows 10. I tried to install it with UEFI, so in the installation process i made a 512 MB EFI partition and selected it as a boot device. The installation went smoothly. I booted into Windows then immediately restarted, went into boot menu, selected the "OS Boot Manager (UEFI) - ubuntu ()" and got the "The selected boot device failed. Press <Enter> to Continue." error message.

I tried to turn off Secure boot and switch to Legacy but nothing worked. Though I'm able to boot to the OS through the Super Grub2 utility I have on an external flash drive. But I want to be able to boot to Linux without it.

I don't know what else to do. If you have any other questions, I will of course answer them. Thank you for your help in advance 🙂

[WAWood]

@martin_ruzek 

I'm sorry, but HP does not provide support for Linux distros.

IF you replace the preloaded Windows OS with a Linux distro, or add a Linux distro, then you assume full responsibility for maintaining that -- including solving any problems with booting the other OS and/or installing the other OS.

Modern PCs with UEFI, instead of the older BIOS, are especially difficult to install because you have to go into the UEFI settings and make several changes before you can even boot from a USB stick -- and we are unable to assist in that work.

Your best bet for support now is to contact the support forum of the distro you are using.