Though, at that moment the idea fixed the issue, but now device tries to boot from different partitions of HDD.
Now, the thing had got strange lately. Since my root partition is on sdb1 and HDD is labelled as sda1, but at current boot, they are labelled as sdc1 and sdd1. And this happened when device tried to boot up first from Grub-less sda1.
After reboot, label becomes normal.
I tried to save the logs of emergency mode, but it returned some long code and told it is truncated.
Nor I was able to use eos-sendlog. What should be my steps to fix this ?
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a device; this may
# be used with UUID= as a more robust way to name devices that works even if
# disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
UUID=a4f552a4-21c8-4da3-932a-f72d289bfde6 / ext4 defaults,noatime 0 1
tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
UUID=46994f1c-f1a8-4687-a5af-6ebe09e30798 /mnt/sda1 ext4 defaults,noatime,nofail 0 2
UUID=77d462a0-1576-4eed-b18d-bbafea04c24a /mnt/sda2 ext4 defaults,noatime 0 2
UUID=9c09fd9d-f36b-42b6-9ca5-bfeb6219d0e5 /mnt/sda5 ext4 defaults,noatime 0 2
UUID=23c7fa5a-28fb-49e3-854a-638bfec7844c /mnt/sda6 ext4 defaults,noatime 0 2