I have managed to install Ubuntu 20.04 and when I am starting the laptop it shows system boot order not found initialising defaults and loads the OS ultimately. I had windows 7 and 10 previously installed (most probably in legacy Bios mode, I am not sure). But I used the efibootmgr in Ubuntu to check and it shows that currently, my Ubuntu is in EFI mode. I don't know how it is happening. I tried to use boot-repair to repair grub-efi, also mbr separately. But it does not help me to boot into windows anyhow. My laptop is a Lenovo z570 IdeaPad model. Is there a way to fix the boot menu so I can select whether to boot to Ubuntu or Windows? Please help.
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You can select which system to boot with the help of boot-repair. Installed 20.04 yesterday and had the same problem. Can you open the boot menu in BIOS?
Julian
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