GRUB_HIDDEN_TIMEOUT=0.0
GRUB_TIMEOUT=0.0
当然，我们最终运行了update-grub。 在我的电脑上它有效果。
GRUB_DEFAULT=4
GRUB_HIDDEN_TIMEOUT=5
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
GRUB_FORCE_HIDDEN_MENU="true"
export GRUB_FORCE_HIDDEN_MENU
sudo touch /etc/grub.d/50_hidemenu
sudo chmod +x /etc/grub.d/50_hidemenu
#!/bin/sh
cat <<EOF
if [ "x\${timeout}" != "x-1" ]; then
if keystatus; then
if keystatus --shift; then
set timeout=-1
else
set timeout=0
fi
else
if sleep --interruptible ${GRUB_HIDDEN_TIMEOUT} ; then
set timeout=0
fi
fi
fi
EOF
并且更新了grub;
sudo update-grub
GRUB_TIMEOUT=0，这个方法将不起作用，奇怪的是，应用了这个设置并重启后，grub菜单仍然可见，并持续显示10秒。grub和30_osprober两个文件！！！当出现问题时，可以将原始文件恢复回来。/etc/default/grub文件中：GRUB_DEFAULT=4 #set this value to the OS you want to boot
GRUB_HIDDEN_TIMEOUT=0
GRUB_TIMEOUT=0
/etc/grub.d/30_os-prober中，
有一段代码，如果/etc/default/grub中的超时时间设置为零，则将grub的超时时间设置为10秒。我不知道为什么开发人员把它放在那里，但它阻止了隐藏grub菜单。set timeout_style=menu
if [ "\${timeout}" = 0 ]; then
set timeout=10 # I changed this from 10 to 0
sudo update-grub以生成新的grub引导顺序。GRUB_TIMEOUT= 0中没有在=后面加了空格。 - muru/etc/default/grub文件，并设置类似于以下数值的值：GRUB_DEFAULT= <number of default entry starting from 0>
GRUB_TIMEOUT= 0 # time in seconds to boot default
# GRUB_HIDDEN_TIMEOUT=0 # warning: activating this may lock you out from GRUB menu
sudo update-grub
"Microsoft Windows XP Professional"），而不是输入条目编号。
/etc/default/grub文件，将GRUB_TIMEOUT和GRUB_HIDDEN_TIMEOUT分别设置为0和5，并且甚至使用GRUB_DEFAULT指定默认启动镜像，下面是使它正常工作的步骤。
将以下内容添加到/etc/default/grub文件的末尾：
GRUB_FORCE_HIDDEN_MENU="true"
export GRUB_FORCE_HIDDEN_MENU
备份你的/etc/grub.d/30_os-prober文件，并用此处找到的版本进行覆盖。
测试一下！按下SHIFT键显示菜单。
#! /bin/sh
set -e
# grub-mkconfig helper script.
# Copyright (C) 2006,2007,2008,2009 Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
prefix="/usr"
exec_prefix="${prefix}"
datarootdir="${prefix}/share"
. "${datarootdir}/grub/grub-mkconfig_lib"
found_other_os=
make_timeout () {
if [ "x${found_other_os}" = "x" ] || [ "x${GRUB_FORCE_HIDDEN_MENU}" = "xtrue" ] ; then
if [ "x${1}" != "x" ] ; then
if [ "x${GRUB_HIDDEN_TIMEOUT_QUIET}" = "xtrue" ] ; then
verbose=
else
verbose=" --verbose"
fi
if [ "x${1}" = "x0" ] ; then
cat <<EOF
if [ "x\${timeout}" != "x-1" ]; then
if keystatus; then
if keystatus --shift; then
set timeout=-1
else
set timeout=0
fi
else
if sleep$verbose --interruptible 3 ; then
set timeout=0
fi
fi
fi
EOF
else
cat << EOF
if [ "x\${timeout}" != "x-1" ]; then
if sleep$verbose --interruptible ${GRUB_HIDDEN_TIMEOUT} ; then
set timeout=0
fi
fi
EOF
fi
fi
fi
}
adjust_timeout () {
if [ "x$GRUB_BUTTON_CMOS_ADDRESS" != "x" ]; then
cat <<EOF
if cmostest $GRUB_BUTTON_CMOS_ADDRESS ; then
EOF
make_timeout "${GRUB_HIDDEN_TIMEOUT_BUTTON}" "${GRUB_TIMEOUT_BUTTON}"
echo else
make_timeout "${GRUB_HIDDEN_TIMEOUT}" "${GRUB_TIMEOUT}"
echo fi
else
make_timeout "${GRUB_HIDDEN_TIMEOUT}" "${GRUB_TIMEOUT}"
fi
}
if [ "x${GRUB_DISABLE_OS_PROBER}" = "xtrue" ]; then
adjust_timeout
exit 0
fi
if [ -z "`which os-prober 2> /dev/null`" -o -z "`which linux-boot-prober 2> /dev/null`" ] ; then
# missing os-prober and/or linux-boot-prober
adjust_timeout
exit 0
fi
OSPROBED="`os-prober | tr ' ' '^' | paste -s -d ' '`"
if [ -z "${OSPROBED}" ] ; then
# empty os-prober output, nothing doing
adjust_timeout
exit 0
fi
osx_entry() {
found_other_os=1
cat << EOF
menuentry "${LONGNAME} (${2}-bit) (on ${DEVICE})" --class osx --class darwin --class os {
EOF
save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
cat << EOF
load_video
set do_resume=0
if [ /var/vm/sleepimage -nt10 / ]; then
if xnu_resume /var/vm/sleepimage; then
set do_resume=1
fi
fi
if [ \$do_resume = 0 ]; then
xnu_uuid ${OSXUUID} uuid
if [ -f /Extra/DSDT.aml ]; then
acpi -e /Extra/DSDT.aml
fi
$1 /mach_kernel boot-uuid=\${uuid} rd=*uuid
if [ /System/Library/Extensions.mkext -nt /System/Library/Extensions ]; then
xnu_mkext /System/Library/Extensions.mkext
else
xnu_kextdir /System/Library/Extensions
fi
if [ -f /Extra/Extensions.mkext ]; then
xnu_mkext /Extra/Extensions.mkext
fi
if [ -d /Extra/Extensions ]; then
xnu_kextdir /Extra/Extensions
fi
if [ -f /Extra/devprop.bin ]; then
xnu_devprop_load /Extra/devprop.bin
fi
if [ -f /Extra/splash.jpg ]; then
insmod jpeg
xnu_splash /Extra/splash.jpg
fi
if [ -f /Extra/splash.png ]; then
insmod png
xnu_splash /Extra/splash.png
fi
if [ -f /Extra/splash.tga ]; then
insmod tga
xnu_splash /Extra/splash.tga
fi
fi
}
EOF
}
wubi=
for OS in ${OSPROBED} ; do
DEVICE="`echo ${OS} | cut -d ':' -f 1`"
LONGNAME="`echo ${OS} | cut -d ':' -f 2 | tr '^' ' '`"
LABEL="`echo ${OS} | cut -d ':' -f 3 | tr '^' ' '`"
BOOT="`echo ${OS} | cut -d ':' -f 4`"
if [ -z "${LONGNAME}" ] ; then
LONGNAME="${LABEL}"
fi
echo "Found ${LONGNAME} on ${DEVICE}" >&2
case ${BOOT} in
chain)
case ${LONGNAME} in
Windows*)
if [ -z "$wubi" ]; then
if [ -x /usr/share/lupin-support/grub-mkimage ] && \
/usr/share/lupin-support/grub-mkimage --test; then
wubi=yes
else
wubi=no
fi
fi
if [ "$wubi" = yes ]; then
echo "Skipping ${LONGNAME} on Wubi system" >&2
continue
fi
;;
esac
found_other_os=1
cat << EOF
menuentry "${LONGNAME} (on ${DEVICE})" --class windows --class os {
EOF
save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
case ${LONGNAME} in
Windows\ Vista*|Windows\ 7*|Windows\ Server\ 2008*)
;;
*)
cat << EOF
drivemap -s (hd0) \${root}
EOF
;;
esac
cat <<EOF
chainloader +1
}
EOF
;;
linux)
LINUXPROBED="`linux-boot-prober ${DEVICE} 2> /dev/null | tr ' ' '^' | paste -s -d ' '`"
prepare_boot_cache=
for LINUX in ${LINUXPROBED} ; do
LROOT="`echo ${LINUX} | cut -d ':' -f 1`"
LBOOT="`echo ${LINUX} | cut -d ':' -f 2`"
LLABEL="`echo ${LINUX} | cut -d ':' -f 3 | tr '^' ' '`"
LKERNEL="`echo ${LINUX} | cut -d ':' -f 4`"
LINITRD="`echo ${LINUX} | cut -d ':' -f 5`"
LPARAMS="`echo ${LINUX} | cut -d ':' -f 6- | tr '^' ' '`"
if [ -z "${LLABEL}" ] ; then
LLABEL="${LONGNAME}"
fi
if [ "${LROOT}" != "${LBOOT}" ]; then
LKERNEL="${LKERNEL#/boot}"
LINITRD="${LINITRD#/boot}"
fi
if [ -z "${prepare_boot_cache}" ]; then
prepare_boot_cache="$(prepare_grub_to_access_device ${LBOOT} | sed -e "s/^/\t/")"
[ "${prepare_boot_cache}" ] || continue
fi
found_other_os=1
cat << EOF
menuentry "${LLABEL} (on ${DEVICE})" --class gnu-linux --class gnu --class os {
EOF
save_default_entry | sed -e "s/^/\t/"
printf '%s\n' "${prepare_boot_cache}"
cat << EOF
linux ${LKERNEL} ${LPARAMS}
EOF
if [ -n "${LINITRD}" ] ; then
cat << EOF
initrd ${LINITRD}
EOF
fi
cat << EOF
}
EOF
done
;;
macosx)
OSXUUID="`grub-probe --target=fs_uuid --device ${DEVICE} 2> /dev/null`"
osx_entry xnu_kernel 32
osx_entry xnu_kernel64 64
;;
hurd)
found_other_os=1
cat << EOF
menuentry "${LONGNAME} (on ${DEVICE})" --class hurd --class gnu --class os {
EOF
save_default_entry | sed -e "s/^/\t/"
prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
grub_device="`${grub_probe} --device ${DEVICE} --target=drive`"
mach_device="`echo "${grub_device}" | sed -e 's/(\(hd.*\),msdos\(.*\))/\1s\2/'`"
grub_fs="`${grub_probe} --device ${DEVICE} --target=fs`"
case "${grub_fs}" in
*fs) hurd_fs="${grub_fs}" ;;
*) hurd_fs="${grub_fs}fs" ;;
esac
cat << EOF
multiboot /boot/gnumach.gz root=device:${mach_device}
module /hurd/${hurd_fs}.static ${hurd_fs} --readonly \\
--multiboot-command-line='\${kernel-command-line}' \\
--host-priv-port='\${host-port}' \\
--device-master-port='\${device-port}' \\
--exec-server-task='\${exec-task}' -T typed '\${root}' \\
'\$(task-create)' '\$(task-resume)'
module /lib/ld.so.1 exec /hurd/exec '\$(exec-task=task-create)'
}
EOF
;;
*)
echo " ${LONGNAME} is not yet supported by grub-mkconfig." >&2
;;
esac
done
adjust_timeout
cat <<EOF
if [ "x\${timeout}" != "x-1" ]; then
if keystatus; then
if keystatus --shift; then
set timeout=-1
else
set timeout=0
fi
else
if sleep$verbose --interruptible 3 ; then
set timeout=0
fi
fi
fi
EOF
/etc/default/grub文件后，需要使用sudo update-grub命令来更新grub。 - WilfGrub Customizer现在将显示在“应用程序”>“系统工具”菜单中。sudo add-apt-repository ppa:danielrichter2007/grub-customizer
sudo apt-get update sudo apt-get install grub-customizer
gksudo grub-customizer
grub-customizer（不是 'optimizer'），虽然它能工作，但不能帮助我在不按下 Shift 键的情况下隐藏 GRUB 菜单。 - Nickolai Leschovgrub.bak的文件，它是你的grub.cfg文件的精确副本，唯一的区别是将set timeout=0行更改为set timeout=10，例如。创建一个shell脚本，根据你的需求允许你重新启动。我创建了一个等效的Python脚本来满足这些要求，但当然需要使用sudo调用。我只是将它放在我的设置中的/usr/bin目录下，作为指向实际脚本本身的符号链接。注意：我在Arch上运行fluxbox，所以不确定这个脚本和Ubuntu之间是否有任何差异，但应该几乎没有修改。脚本如下：#! /usr/bin/python
from shlex import split
from subprocess import call
from os import rename, chdir
chdir('/boot/grub/')
try:
with open('grub.bak','r') as alternate:
pass
if raw_input('Auto-boot is set. Un-set?> ') == 'y':
rename('grub.cfg','grub.back')
rename('grub.bak','grub.cfg')
if raw_input('Reboot system?> ') == 'y':
call(split('shutdown -r now'))
except:
if raw_input('Auto-boot is not set. Set?> ') == 'y':
rename('grub.cfg','grub.bak')
rename('grub.back','grub.cfg')
if raw_input('Reboot system?> ') == 'y':
call(split('shutdown -r now'))