我很迷茫。我在笔记本电脑上全新安装了 Ubuntu 10.04。第一次重启没问题。我运行了所有推荐的升级,现在每次启动时都只出现
grub>_
提示。没有错误消息,只有提示,顶部有一个小横幅,上面写着 grub 的版本,并告诉我我进行了最少的 bash 样式编辑。我试过:
1)通过以下方式重新安装 grub
sudo grub-install sda
(只有一个磁盘,只有两个分区,一个主分区,一个用于交换)
2)改变
GRUB_HIDDEN_TIMEOUT=10
GRUB_TIMEOUT=30
GRUB_CMDLINE_LINUX_DEFAULT="rootdelay=90"
GRUB_CMDLINE_LINUX="rootdelay=90"
在 /etc/default/grub 中。没有运气。我能使用以下命令启动:
grub> set root=(hd0,1)
grub> probe (hd0,1) -u
c00fadde-f7e8-45e7-a4da-0235605f756
grub> linux /boot/vmlinuz-2.6.32-21-generic root=UUID=c00fadde-f7e8-45e7-a4da-0235605f756 rootdelay=90
grub> initrd /boot/initrd.img-2.6.32-21-generic
grub> boot
然后一切似乎都很好。如果我尝试从 grub 提示符
configfile /boot/grub/grub.cfg
屏幕清除并且我得到另一个 grub> 提示符。
那么,认真想想,问题可能出在哪里呢?
编辑:
/boot/grub/grub.cfg 全文
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="0"
if [ ${prev_saved_entry} ]; then
set saved_entry=${prev_saved_entry}
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z ${boot_once} ]; then
saved_entry=${chosen}
save_env saved_entry
fi
}
function recordfail {
set recordfail=1
if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756
set locale_dir=($root)/boot/grub/locale
set lang=en
insmod gettext
if [ ${recordfail} = 1 ]; then
set timeout=-1
else
set timeout=30
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.32-21-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756
linux /boot/vmlinuz-2.6.32-21-generic root=UUID=c00fadde-f7e8-45e7-a4da-0235c605f756 ro rootdelay=90 rootdelay=90
initrd /boot/initrd.img-2.6.32-21-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756
echo 'Loading Linux 2.6.32-21-generic ...'
linux /boot/vmlinuz-2.6.32-21-generic root=UUID=c00fadde-f7e8-45e7-a4da-0235c605f756 ro single rootdelay=90
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.32-21-generic
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
if [ ${timeout} != -1 ]; then
if sleep --verbose --interruptible 10 ; then
set timeout=0
fi
fi
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
update-grub 的输出
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.32-21-generic
Found initrd image: /boot/initrd.img-2.6.32-21-generic
Found memtest86+ image: /boot/memtest86+.bin
done
/boot 的内容
total 14280
-rw-r--r-- 1 root root 640617 2010-04-16 09:01 abi-2.6.32-21-generic
-rw-r--r-- 1 root root 115847 2010-04-16 09:01 config-2.6.32-21-generic
drwxr-xr-x 3 root root 4096 2010-09-08 02:42 grub
-rw-r--r-- 1 root root 7968754 2010-09-02 01:49 initrd.img-2.6.32-21-generic
-rw-r--r-- 1 root root 160280 2010-03-23 05:37 memtest86+.bin
-rw-r--r-- 1 root root 1687378 2010-04-16 09:01 System.map-2.6.32-21-generic
-rw-r--r-- 1 root root 1196 2010-04-16 09:03 vmcoreinfo-2.6.32-21-generic
-rw-r--r-- 1 root root 4029792 2010-04-16 09:01 vmlinuz-2.6.32-21-generic
答案1
所以我有 Ubuntu 9.04,也许它会足够接近以便进行比较。
中的行/boot/grub/menu.lst
是
title Ubuntu 9.04, kernel 2.6.28-16-server
uuid a0ebaed5-072b-4591-9967-bcf4b5f9a507
kernel /boot/vmlinuz-2.6.28-16-server root=UUID=a0ebaed5-072b-4591-9967-bcf4b5f9a507 ro quiet splash
initrd /boot/initrd.img-2.6.28-16-server
此文件中是否有指向图像的行?它们指向正确的图像吗?
答案2
根据初始数据,最合理的答案是:
您的/boot/grub/grub.cfg
已损坏。它是由 命令生成的update-grub
,因此请先尝试运行此命令。请注意,update-grub
每次修改 时都必须重新运行/etc/default/grub
,如文件顶部的注释所示。update-grub
每次安装、升级或删除内核时也必须重新运行,但 Ubuntu 软件包会为您处理这个问题。
如果运行update-grub
不能解决问题,请编辑您的问题以添加:的内容;终端上/boot/grub/grub.cfg
的完整输出;的输出。update-grub
ls -l /boot
编辑:我尝试了类似配置的帖子grub.cfg
,并且成功了。所以这不是问题。
非常疯狂的镜头:脚本中可能存在不可打印的字符grub.cfg
(从/etc/default/grub
脚本复制而来)?以下命令应该不会输出任何内容:
<cheshirekow.grub.cfg tr '\t' ' ' | LC_ALL=C grep '[^ -~]' | cat -A