Im new to Linux. Have to install Ubuntu for some school work, but I didn't want to lose my current windows so I installed Ubuntu in a different Partition from the Windows one.
It installed correctly and everything but now whenever I switch on the laptop or restart it, it automatically boots Windows 10.
The only way i can use Ubuntu is if I boot a LiveUSB and choose the 'Try Ubuntu' option. How do I get my computer to show me the "Choose OS Screen"?
Using Dell Inspiron laptop
Go to your BIOS settings and search for Boot options>Secure Boot and disable it. From Windows 8.1 Microsoft has introduced UEFI firmware to provide safety from rootkit malware and what is happening here is that Windows Boot Manager is bypassing GRUB bootloader. Boot into Windows and Go to Control Panel>Power Settings>Choose what power button does and disable fast startup. If you are still unable to boot into Ubuntu then boot into Windows and open Administrator's Command Prompt and run this command.
bcdedit /set "{bootmgr}" path \EFI\ubuntu\grubx64.efi
You should be able to see GRUB bootloader.
So I finally fixed it. Turns out both Windows 10 and Ubuntu were installed in Legacy Mode and there was a problem with the bootloader. I ran the 'boot-repair' from Ubuntu on a LiveUSB which re-installed the GRUB Bootloader and everything was good.
Posting this answer in case someone else runs into the same issue.
Thanks for the help, ya'all :)
