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250 - Change the default kernel that boots from GRUB

If you selected GRUB as your boot loader, you need to modify the file /boot/grub/grub.conf.

* default 0

The first menu entry title linux is the one to boot by default. grub.conf "default=x" getting updated upon yum update

To get changed it to "default=1".

Rebooting the machine boots to an old version of the kernel, rather than the new version which had been correctly loaded
as the 0th stanza in grub.conf.  Installing a new kernel RPM will insert a stanza into grub.conf for the new kernel version.




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Story | by Dr. Radut