I installed ubuntu 13.04 on D: while windows 7 on C: chosing option side by side. but ubuntu ate my 40gb partition + 3gb swap with ext4 and NO DUAL BOOT. My studio 15 still on Win7. tried to install ubuntu boot repair through ctrl+alt+t but it says it is not present in E: Also tried to delete ubuntu ext4 partions but ended up in free space which neither can be formatted nor be merged. Presently re-installed ubuntu 13.04 with same above condition. What to do?? Also want to add that In G parted menu i selected dev/sda6 as my ubuntu partition and same as boot loader install parion.