Recover Ubuntu Startup items and fix boot in Ubuntu after reloading Win7

1. Enter $ sudo-i (this step is used to get root privileges for the following operations.) ）

2. Enter $ mkdir/media/tempdir (Create a folder TempDir to mount just the sda10, this folder name you can depend on personal interests, not too many requirements. ）

3. Enter $ mount/dev/sda10/media/tempdir (the sda10 is mounted under the TempDir folder. ）

4. Enter $ grub-install--ROOT-DIRECTORY=/MEDIA/TEMPDIR/DEV/SDA (This step is used to reinstall the GRUB2 to the hard drive master boot record inside the MBR, note/media/tempdir and/DEV/SDA There is a space between the root front two horizontal line for two parameters)

   Enter later if "Installation finished.no error reported" appears. character, it means that the operation was successful.

Recover Ubuntu Startup items and fix boot in Ubuntu after reloading Win7