grub.conf

[mazeh]

I have installed a new kernel and updated the grub.conf file, but when the machine is rebooted I do not see the new entry. For good measure I copied some of the existing entries in the grub.conf file; same result I just see the original 3 entries before my edit.

Any clues as to what might be going wrong??

 

[smah]

Sorry, but are you booting with Lilo by any chance?

 

[mazeh]

No, grub for sure.

I have upgraded all the compute nodes on my cluster and they booted fine with the new kernel, using the updated grub.conf file. It's just the headnode that is having a problem.

 

[mazeh]

The problem has been solved by running /sbin/grub-install , guess the MBR must have been corrupted.

 

[timsr]

With Lilo or grub, the change in configuration will not take place until the changes are installed. With lilo, just run lilo at a prompt and the message diplayed will be the contents of the lilo.conf file. The same is true with grub. The changes are made when grub-install is run. The MBR is not changed by modifying the conf files.