update-grub doesn't detects my XP instalation [closed]

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http://askubuntu.com – I installed Windows XP, and I was missing GRUB. Booted to Ubuntu with a GRUB recovery disc.(I doesn't know it's name) Then, I ran sudo update-grub and this is the output: sebastian@sebastian-desktop:~$ sudo update-grub Generating grub.cfg ... Found linux image: /boot/vmlinuz-2.6.38-16-generic-pae Found initrd image: /boot/initrd.img-2.6.38-16-generic-pae Found memtest86+ image: /boot/memtest86+.bin Found Windows Vista (loader) on /dev/sda1 done sebastian@sebastian-desktop:~$ Where is my Windows XP? I'm using Ubuntu 12.04 Precise Pangolin and GRU (HowTos)