not able to boot into window 7. I am naive in ubuntu usage. Pls guide immediately. The following link a got after boot repair. http://paste.ubuntu.com/1218634/ full message is as follows: you can now reboot your computer. Please do not forget to make your BIOS boot on sda (500GB) disk! The boot files of [The OS now in use - Ubuntu 12.04 LTS] are far from the start of the disk. Your BIOS may not detect them. You may want to retry after creating a /boot partition (EXT4, 200MB, start of the disk). This can be performed via tools such as gParted. Then select this partition via the [Separate /boot partition:] option of [Boot Repair]. (https://help.ubuntu.com/community/BootPartition)