default l0 prompt 1 timeout 50 label l0 menu label Debian GNU/Linux, kernel {kernel_version} linux /boot/vmlinuz-{kernel_version} append initrd=/boot/initrd.img-{kernel_version} root=UUID={UUID} ro quiet console=ttyS0 label l0r menu label Debian GNU/Linux, kernel {kernel_version} (recovery mode) linux /boot/vmlinuz-{kernel_version} append initrd=/boot/initrd.img-{kernel_version} root=UUID={UUID} ro console=ttyS0 single text help This option boots the system into recovery mode (single-user) endtext