Translations:GRUB/40/en

or  is the partition in which FreeBSD resides. If the normal UFS install was used for the FreeBSD partition then is a container (something like a logical partition). It consists of the swap and root partition. Verify the script is executable by running ls -la /etc/grub.d/40_custom. If the executable bit is not set then set it using the chmod u+x 40_custom command.