help
If you don't know, just leave it blank.
+config X86_GRUB_TIMEOUT
+ string "Seconds to wait before booting the default entry"
+ depends X86_GRUB_IMAGES
+ default "5"
+ help
+ If you don't know, 5 seconds is a reasonable default.
+
config X86_VDI_IMAGES
bool "Build VirtualBox image files (VDI)"
depends X86_GRUB_IMAGES