Suddenly after shutting down Ubuntu and when reopenning, I get prompted to one shell of BusyBox. I only had a set of options in help there.
I tried to follow this solution: Boot drops to a (initramfs) prompts/busybox
I got a USB pen-drive and it has ISO of Ubuntu. I have selected "Try Ubuntu".
However, my Ubuntu is installed in an external hard disk (connected to the laptop via another USB port, other than the USB Pen drive), and I have Windows 8 installed by default in my laptop (in the internal hard disk). So when I am running the following command.
ubuntu@ubuntu:~$ sudo parted -l
Model: ATA ST1000LM024 HN-M (scsi)
Disk /dev/sda: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Number Start End Size File system Name Flags
1 1049kB 525MB 524MB fat32 EFI system partition boot
2 525MB 567MB 41.9MB fat32 Basic data partition hidden
3 567MB 701MB 134MB Microsoft reserved partition msftres
4 701MB 2849MB 2147MB ntfs Basic data partition hidden, diag
5 2849MB 991GB 989GB ntfs Basic data partition msftdata
6 991GB 1000GB 8853MB ntfs Microsoft recovery partition hidden, diag
Model: SanDisk Cruzer (scsi)
Disk /dev/sdb: 64.0GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 16.4kB 64.0GB 64.0GB primary fat32 boot, lba
None of this is actually my external hard disk in which my Ubuntu 14.04 is installed.
How can I solve this?