Originally Posted by
get-some-gyan007
BIOS Inaccessible: I can't access my BIOS settings at all. The usual keypresses during startup aren't working.
As you can access Ubuntu, open a terminal and enter:-
Code:
sudo systemctl reboot --firmware-setup
While in your firmware settings, disable Secure Boot, Fast Boot , TPM and other security features.
No Boot Menu: I can't select a different operating system at boot.
Possibly Windows 10 was hibernating when you installed Ubuntu?
Boot Windows 10 via your PC boot menu and disable hibernation i.e. fast start up
Windows will be added to grub if it is not in hibernation state.
Reboot into Ubuntu, open a terminal again
Any joy?
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