Nevermind, I'm just not used to looking at it through the eyes of gdisk... your bios_grub partition is at the start of the disk.
I'm quite surprised that virtualbox's bios would have this bug. Given the problems that come with creating a separate /boot partition by default, and at least so far, lack of evidence that such a bug is common on real hardware, this probably won't be changed just as it wasn't for some older machines that couldn't access beyond 8 GB.
Nevermind, I'm just not used to looking at it through the eyes of gdisk... your bios_grub partition is at the start of the disk.
I'm quite surprised that virtualbox's bios would have this bug. Given the problems that come with creating a separate /boot partition by default, and at least so far, lack of evidence that such a bug is common on real hardware, this probably won't be changed just as it wasn't for some older machines that couldn't access beyond 8 GB.