Grub 2.02-beta is not working.

[smurf]

I recently upgraded from 12.04 to 14.04, Gnome FlashBack, almost everything is ok, but Grub is a nightmare.
I have a separate partition for /boot (/dev/sda1) because I always have a partition with installed the system working (now /dev/sda2) and another partition with an experimental installation (now /dev/sda3), when I decide that the new installation is ok I simply change grub.cfg script and my family automatically use the new system without to sense the change.
Upgrading to 14.04 carried the new grub version 2.02-beta, but there is no way for me to put it to work. After a fresh install of Grub I reboot and the grub crash to a "grub rescue>" prompt.
The solution I found now is to mix the contents of old install of grub 1.99 and the new install of grub 2.02-beta, the system gives me some "error: file not found" messages, but boots.
Now, my questions:
1) how can I get a functioning install of Grub 2.02 ?
2) why I receive a message "Hit any key to continue " when booting the new kernels for 14.04?

[smurf (luca-dgh)]

the above attachments are taken after a fresh install of grub 2.02-beta

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1530013/+editstatus and add the package name in the text box next to the word Package.

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