Software Up To Date 昨天为我安装了一个新内核（Ubuntu 12.04，内核 3.13.0-48-generic）。重启后，我运行 grub 定制程序并收到错误。update-grub 也出现同样的错误：
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.13.0-48-generic
Found initrd image: /boot/initrd.img-3.13.0-48-generic
Found linux image: /boot/vmlinuz-3.13.0-46-generic
Found initrd image: /boot/initrd.img-3.13.0-46-generic
Found linux image: /boot/vmlinuz-3.5.0-54-generic
Found initrd image: /boot/initrd.img-3.5.0-54-generic
Found Windows Vista (loader) on /dev/sda1
Found CentOS release 6.6 (Final) on /dev/sdb1
Found linux image: /boot/vmlinuz-3.13.0-48-generic
Found initrd image: /boot/initrd.img-3.13.0-48-generic
Found linux image: /boot/vmlinuz-3.13.0-46-generic
Found initrd image: /boot/initrd.img-3.13.0-46-generic
Found linux image: /boot/vmlinuz-3.5.0-54-generic
Found initrd image: /boot/initrd.img-3.5.0-54-generic
Found Windows Vista (loader) on /dev/sda1
Found CentOS release 6.6 (Final) on /dev/sdb1
Found memtest86+ image: /boot/memtest86+.bin
error: syntax error.
error: Incorrect command.
error: syntax error.
error: Incorrect command.
error: syntax error.
error: line no: 146
Syntax errors are detected in generated GRUB config file.
Ensure that there are no errors in /etc/default/grub
and /etc/grub.d/* files or please file a bug report with
/boot/grub/grub.cfg.new file attached.
done
/boot/grub/grub.cfg 的第 146 行是：
menuentry "CentOS release 6.6 (Final) (on /dev/sdb1)" --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set=root 3bc75d12-4328-4e95-9274-8a825181d0d2 <<-Line 146
linux /boot/vmlinuz-2.6.32-504.12.2.el6.x86_64 root=/dev/sdb1
initrd /boot/initramfs-2.6.32-504.12.2.el6.x86_64.img
}
/boot/grub/grub.cfg.new 的第 146 行是：
menuentry "Ubuntu, with Linux 3.13.0-46-generic (recovery mode)" --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos3)'
search --no-floppy --fs-uuid --set=root 105996f5-ba7e-46f4-b0de-eb5299a19563
echo 'Loading Linux 3.13.0-46-generic ...'
linux /boot/vmlinuz-3.13.0-46-generic root=UUID=105996f5-ba7e-46f4-b0de-eb5299a19563 ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.13.0-46-generic
}
function gfxmode { <<- Line 146
set gfxpayload="${1}"
if [ "${1}" = "keep" ]; then
set vt_handoff=vt.handoff=7
else
set vt_handoff=
fi
}
它提示我“检查 /etc/grub.d/* 中的错误”，但我怎么知道那里有什么错误？由于我从未接触过这些文件，所以我不知道它们应该包含什么。