[gentoo-user] Doubly mounted /boot

[Sergey Filatov]

I don't know if vfat is safe to be mounted twice, but to solve this I'd go with 
mount bind. You can use it in /etc/fstab as well. Mount the /boot as usual, for 
/mnt/rescue/boot use /boot as a source and add "bind" to options section. This 
is definitely safer