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Hi Overmind, how use UEFI backward compatibility. I didn't see any setting in virtual box for backward compatibility.
– Rajasekhar
Commented Feb 3, 2015 at 6:42
It suppose to let you selected (or not) the EFI option in Virtualbox for a 64 bit install. But VirtualBox tends to forget its "NVRAM" settings when you reboot. Anyway, to switch to BIOS mode, run VBoxManage modifyvm "VM name" --firmware bios ; Also note that 4.3 update fixes some UEFI-related booting issues on windows.
– Overmind
Commented Feb 3, 2015 at 6:51
If I use BIOS mode, It goes to Recovery Screen directly and informs m e "PC is running into ISSUES".. If I use latest version of virtual box, no VM is starting (even the old machines or any new linux machine I have created)
– Rajasekhar
Commented Feb 3, 2015 at 7:33
If you switched from EFI to BIOS or backwards you need to clean the target installation drive, or simply delete and recreate it, and make sure it actually boots from the installation kit, not the target drive.
– Overmind
Commented Feb 3, 2015 at 8:13

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