Ubuntu 13.10 has been running fine since I installed it on my external harddrive a few weeks ago. However, yesterday while Ubuntu was running, I accidentally knocked the external harddrive off the table and a cable (power plugged into usb socket) detached. Portions of the screen went grey and the system froze. I had to turn the laptop off by holding down the power button.
I plugged the cable back in and started up the laptop. However, instead of the usual option to boot Ubuntu, I got the gnu grub2 boot prompt. I have actually had this happen a couple of times before, but after plugging everything back in, Ubuntu would boot normally. This time, though, no such luck.
I have booted from the cd I used to install Ubuntu from and selected the option to try without installing. Once there, I ran
sudo fdisk -l from the terminal. Here are the results:
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 500.1 GB, 500107862016 bytes 256 heads, 63 sectors/track, 60563 cylinders, total 976773168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xbb8b9976 Device Boot Start End Blocks Id System /dev/sda1 1 4294967295 2147483647+ ee GPT
As you can see above, my sdb external harddrive is not detected. Disconnecting/reconnecting it seems to make no difference.
Any help would be greatly appreciated!