I erased a Windows XP partition and installed Windows 7 on it. I have no grub screen now and the computer boots straight to Windows. What can I do to reinstall grub?
EDIT: I tried this
sudo grub-install install_device not specified. Usage: grub-install [OPTION] install_device Install GRUB on your drive. -h, --help print this message and exit -v, --version print the version information and exit --modules=MODULES pre-load specified modules MODULES --boot-directory=DIR install GRUB images under the directory DIR/grub instead of the /boot/grub directory --grub-setup=FILE use FILE as grub-setup --grub-mkimage=FILE use FILE as grub-mkimage --grub-mkrelpath=FILE use FILE as grub-mkrelpath --grub-mkdevicemap=FILE use FILE as grub-mkdevicemap --grub-probe=FILE use FILE as grub-probe --no-floppy do not probe any floppy drive --allow-floppy Make the drive also bootable as floppy (default for fdX devices). May break on some BIOSes. --recheck probe a device map even if it already exists --force install even if problems are detected --disk-module=MODULE disk module to use INSTALL_DEVICE can be a GRUB device name or a system device filename. grub-install copies GRUB images into /boot/grub, and uses grub-setup to install grub into the boot sector. Report bugs to <email@example.com>. ubuntu@ubuntu:~$ sudo grub-install /boot/grub /usr/sbin/grub-probe: error: cannot find a device for /boot/grub (is /dev mounted?).
sudo grub-install /boot/grub didn't work, what to do then?