ubuntu win7双系统切换开机启动项
sudo gedit /etc/default/grub sudo update-grub
执行第一句后将第6行的2改成5（一般是5），再执行第二句，重启，即可看到默认选项，在选择界面从上往下0,1,2...（若不对重新打开文件更改即可，记得update-grub）
1 # If you change this file, run 'update-grub' afterwards to update 2 # /boot/grub/grub.cfg. 3 # For full documentation of the options in this file, see: 4 # info -f grub -n 'Simple configuration' 5 6 GRUB_DEFAULT=2 7 #GRUB_HIDDEN_TIMEOUT=0 8 GRUB_HIDDEN_TIMEOUT_QUIET=true 9 GRUB_TIMEOUT=10 10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` 11 GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" 12 GRUB_CMDLINE_LINUX="" 13 14 # Uncomment to enable BadRAM filtering, modify to suit your needs 15 # This works with Linux (no patch required) and with any kernel that obtains 16 # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) 17 #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" 18 19 # Uncomment to disable graphical terminal (grub-pc only) 20 #GRUB_TERMINAL=console 21 22 # The resolution used on graphical terminal 23 # note that you can use only modes which your graphic card supports via VBE 24 # you can see them in real GRUB with the command `vbeinfo' 25 #GRUB_GFXMODE=640x480 26 27 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux 28 #GRUB_DISABLE_LINUX_UUID=true 29 30 # Uncomment to disable generation of recovery mode menu entries 31 #GRUB_DISABLE_RECOVERY="true" 32 33 # Uncomment to get a beep at grub start 34 #GRUB_INIT_TUNE="480 440 1"
