Yesterday I have used partition tool in Windows for extending my C drive. After a few hours, my Windows OS is not identified and cannot boot the device. I used live-USB Ubuntu to look into the harddisk files. It shown my partitions as sda1, sda2, sda5 and I moved my files in C drive to other partition.
Today when I planned to format and install Ubuntu or windows using USB, my hard disk is shown in single partitions.
I want to install Ubuntu without damaging my data and partitions.