[SOLVED] Grub error 2 on booting

Hi to everybody! I tried to install Haiku on a old ibm notebook, where I previously used Puppy Linux. Installation wentvery smoothly but when I restarted the system I got this error:

GRUB Loading stage 1.5
Grub loading, please wait…
Error 2

How can I fix it? Please, try to be simple in your instructions, since I am not so expert in informaticaìs.

Thanks a lot
Giancarlo Perlo - Italy

Solved! I run BootManager from Haiku terminal.