How do I dual boot windows and ubantu on start screen.I have installed ubantu and I have windows 10 preloaded.While switching on the Laptop,only windows is getting booted and there is no option to choose between the two OS present.
I'm sorry, but HP only warranties their PCs for usage with the OS that comes preinstalled.
IF you replace that 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.
Your best bet for support with issues with Linux is to contact the support forum of the distro you are using.
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