系统ubuntu10.10，我的系统正常启动时的grub显示超时时间10秒。但是如果我在开机的过程中断电，再开机，grub就不再显示超时时间了，必须手动选择才能进入系统，请问如何超时自动进入系统。
我在、/etc/default/grub里已经设置了超时时间了，但是这个时间只在正常重启的时候对grub生效。而在开机过程中断电的异常重启时不生效，此时grub必须手动选择。
这个问题通常在grub2引导的时候突然断电会出现
由于我们项目所用的UBUNTU系统经常会断电，所以要解决这个问题，谢谢各位！附上我的/etc/default/grub
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# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.

GRUB_DEFAULT=0//默认选项
#GRUB_HIDDEN_TIMEOUT=0//注销使得单系统显示grub
GRUB_HIDDEN_TIMEOUT_QUIET=true//这个选项干嘛的
GRUB_TIMEOUT=10//超时时间
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_LINUX_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"