My laptop is dual boot. One Windows XP SP2 and the other is Ubuntu 10.04. I’m using Ubuntu default boot manager, which is Grub 2.

This is the partition info:
hd0,1 : Windows XP (NTFS)
hd0,5 : Partition for data (NTFS)
hd0,6 : Ubuntu (Ext3)

Yesterday, my little sister borrow it to, you know – “facebook-ing” using Windows XP. Somehow she formatted by Ubuntu partition by accident. Next morning I woke up with these:
Grub loading
error unknown filesystem
grub rescue>

A quick check shows that my Ubuntu partition is now empty and the partition type is NTFS, oh my gosh…

In order to get to Windows, I need to remove the grub bootloader. These are my steps to remove the bootloader:

[*] Boot the laptop using Windows XP install disk.

[*] Choose Recovery when asked — press “R”.

[*] After logged in to the recovery console, choose the Windows installation.

[*] Enter your administrator password when asked.

[*] Execute the following command:
fixmbr

[*] Reboot the laptop.

[*] Done.

Good luck!