Ok, my bad. I used update-grub to update the grub configuration. Well, seems this configuration doesn't like it.
If I use update-grub2, then the system boot correctly.
I know that update-grub is an update-grub2 symbolic link but probably the calling name make difference. I'll look for some information on this because it's dangerous. I mean, if upgrading kernels break the boot process, could be a big problem.

Bye
Davo


On 01/14/2013 03:32 PM, [email protected] wrote:
Hi everybody,
I'm planning to use a nice server to implement an Edubuntu 12.04LTS School lab. I installed from USB on a dual processor server with a Raid 10 storage. Since the storage is like 4 terabyte and Edubuntu see only one large disk /dev/sda, I let the installer do the automatic partitioning and installation. After the installation the server booted correctly, then I installed the upgrades (Update Manager). After that, the server doesn't boot anymore and stops at the "grub>" prompt. I'm still able to boot giving at the grub> prompt the linux and initrd right commands but even after boot, an update-grub and reboot, the server stops at grub>. Here some detail: the installer used the GPT table and I have 3 partitions, /dev/sda1 (bios_grub), /dev/sda2 (root filesystem) and swap.

Is there any known problem with this configuration in Edubuntu as far as you know?
Thanks for the help!
Davo



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