Ubuntu12.04 selecting the GRUB startup Item

Ubuntu12.04 selecting the GRUB startup Item
Ubuntu12.04 Grub boot Item 1. If an exception occurs when the host is switched on or off, You need to select a boot item on the keyboard, such as the system. This operation is annoying ..
2. Solutions to this problem:
(A) The valid method is to modify the/etc/grub. d/00_head file:
Cat <EOF
If [\ $ {recordfail} = 1]; then
Set timeout =-1
Else
Set timeout =$ {GRUB_TIMEOUT}
Fi
EOF


Set timeout =-1 to the desired number of seconds.


(B) Another way is to put the/etc/grub. d/00_head file,
Set timeout =-1
Set timeout =$ {GRUB_RECORDFAIL_TIMEOUT: -- 1}
Set the following in the/etc/default/grub file:
GRUB_RECORDFAIL_TIMEOUT = 10
Save and execute update-grub.

However, a single modification to the/boot/grub. cfg file will invalidate the modification by running the update-grub command to regenerate the file.


See: http://forum.ubuntu.org.cn/viewtopic.php? F = 139 & t = 395230 & p = 3099520 # p3099520