OS does not boot from new kernel

Hi guys,

thanks for helping out with this.

I updated my rhel 6.5. The kernel was updated. There are three kernels. Default is set to "0". However, the OS is still booting from kernel "3".

Here is what I have done:

1. Comment the kernel in grub.conf.
   
   Outcome: did not work

2. Uninstall new kernel and reinstall.
   Outcome: did not work.

OS is still booting from old kernel.

Thanks for your assistance.

Arrey