I installed xubuntu 18.04 from a usb onto my Acer Aspire ES1-572-37EP which has Windows 10. It also has Anarchy Linux installed.
The problem is that when I reboot, the machine just boots the Windows and doesn’t offer a menu to choose either of the other OSs.
The BIOS is in UEFI boot mode and secure boot is disabled. In the Windows control panel, I have turned off the fast startup option. When I did the installation, I chose to boot from the Windows boot manager and in the edit partitions screen I selected sda1 as the boot/efi partition without formatting (actually, the formatting option was grayed out). sda6 as swap and sda7 as the new xubuntu root (/) partition. (Anarchy is on sda5 and sda8 is used for file storage.
What do I need to do to get an OS selection menu to appear when I boot up?
Thanks and good night.