I had dual booted my system with Windows 10 and Linux-Ubuntu-16.04.
I recently was modifying some configuration files in Linux-Kernel 4.17 which did not work so I had to delete that and restore to my normal 4.13 version. But in the verge of deleting I might have deleted both the kernels and now when I boot my system I can get only windows turned on with no option to select ubuntu.
Is it that my ubuntu has completely removed and I need to reinstall it again?
If I reinstall will I loose my present data in Windows and will I be able to gain data I stored in Linux OS?
What steps needs to be followed? Please help me out! I'm a core Linux user with all the files saved in it!