I am getting error 'operating System Not Found' when booting my Sony Vaio laptop with windows 7 OS. I checked the booting priority- first is internal HDD. In bios the HDD drive size show around 600 GB and so i think the HDD is not crashed. So I am trying to recover data from the HDD. I created one bootable flash drive of Ubuntu and booted. But the internal drive is not seeing in the left panel on desktop. please help me why it is so?
Below the lsblk result;
ubuntu@ubuntu:~$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 698.7G 0 disk sdb 8:16 1 3.6G 0 disk └─sdb1 8:17 1 3.6G 0 part /cdrom sr0 11:0 1 1024M 0 rom loop0 7:0 0 975.9M 1 loop /rofs