Forcing Grub to display menu at boot time

Posted: April 7, 2012 in Technology
Tags: , , , ,

in Dual boot system, grub usually displays the menu at boot time by default but in case of single boot systems, this is generally not displayed. I just compiled a kernel and added the entry in grub also but while booting, grub menu was not displayed and I could not boot into the older kernel. To force grub to display the boot menu during boot time, edit the /etc/defaults/grub file and comment out the following statement
by changing it to
Now to modify the time for this menu should be displayed during boot by editing the value of GRUB_TIMEOUT. In my case default was
which I changed to
to display the menu for 5 seconds.
now update the grub :
Next boot you will be able to see the menu.

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