That was the main problem why my laptop couldn’t be rebooted. I already have windows XP installed, and then I installed Ubuntu 8.04.
After happy with Ubuntu, I created another partition in order to store my data, logical one of course. This when that shit happened. I rebooted my laptop and it suddenly failed to load GRUB. I had no idea what happened and I finally just change my harddisk. I installed again with windows and it also failed to be installed.
What was the problem?
Resizing the partition will erased the GRUB and damage filesystem. SHIT NO!!
This is my conclusion and any lesson you guys can take from my lousy story, Windows is so selfish, thinks that it the one and only operating system in the world making it doesn’t want to acknowledge any other OS.