修改grub.cfg 让Ubuntu 10.04屏幕打印开机信息。

修改grub.cfg 让Ubuntu 10.04屏幕打印开机信息。

#

# 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

#由 /usr/sbin/grub-mkconfig读取 /etc/default/grub中的配置信息，并采用/etc/grub.d 作为模板，自动生成。

### 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 d98561c1-62af-4753-b6f0-fbcfcb6a7541

if loadfont /usr/share/grub/unicode.pf2 ; then   加载的字体文件。

  set gfxmode=640x480                                        gfx模式是640*480

  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 d98561c1-62af-4753-b6f0-fbcfcb6a7541

set locale_dir=($root)/boot/grub/locale   本地化文件目录

set lang=en    语言是english

insmod gettext

if [ ${recordfail} = 1 ]; then

  set timeout=-1

else

  set timeout=10

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 ###

菜单项

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 d98561c1-62af-4753-b6f0-fbcfcb6a7541

linux /boot/vmlinuz-2.6.32-21-generic root=UUID=d98561c1-62af-4753-b6f0-fbcfcb6a7541 ro   quiet 

我把这里的splash去除了。这样开机就能看到那些开始信息了。

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 d98561c1-62af-4753-b6f0-fbcfcb6a7541

echo 'Loading Linux 2.6.32-21-generic ...'

linux /boot/vmlinuz-2.6.32-21-generic root=UUID=d98561c1-62af-4753-b6f0-fbcfcb6a7541 ro single 

恢复模式，是单用户模式。

echo 'Loading initial ramdisk ...'   ramdisk？输出这个信息做什么呢？

initrd /boot/initrd.img-2.6.32-21-generic  跟正常启动时的，是同一个文件。

}

### END /etc/grub.d/10_linux ###

结束etc/grub.d/10_linux 

开启/etc/grub.d/20_memtest86+

### BEGIN /etc/grub.d/20_memtest86+ ###

menuentry "Memory test (memtest86+)" {

insmod ext2

set root='(hd0,1)'

search --no-floppy --fs-uuid --set d98561c1-62af-4753-b6f0-fbcfcb6a7541

linux16 /boot/memtest86+.bin

}

menuentry "Memory test (memtest86+, serial console 115200)" {

insmod ext2

set root='(hd0,1)'

search --no-floppy --fs-uuid --set d98561c1-62af-4753-b6f0-fbcfcb6a7541

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 keystatus; then

    if keystatus --shift; then

      set timeout=-1

    else

      set timeout=0

    fi

  else

    if sleep --interruptible 3 ; then

      set timeout=0

    fi

  fi

fi

### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###  可以自由添加启动菜单项

# 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 ###