Attempt to read or write outside of disk 'hd0' after trying to install alongside

Question

these days i was having problems with the speed of my system Ubuntu gnome 16.04 lts,so i decided to install along side it the same partition to see if it would be better,instead of that installation failed and now i have this problem,and if i try to install again,installation stacked at page that telling me download updates while installing gnome?What i should do?also boot repair keep scanning a lot of time.

Answer 1

Take these steps:

1. Clean file system:-

   • Boot into recovery mode
   • Select fsck to clean your file system
   • 

2. Now if you wish to still dual boot.

   • Insert the install USB and follow the instruction and please select to install along side the current OS.

Source:

Dual booting two Ubuntu versions