Ubuntu 15.04 not booting after terminal upgrade

Question

Ubuntu 15.04 shows the following error when I try to boot. This happened after a direct upgrade from 14.04.

Target filesystem doesn't have requested /sbin/init.

/bin/sh: 0: Can't open splash

[ 5.668912] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00

Answer 1

You will have to:

1. Boot from the installation medium (a USB? A CD?).

2. Open the terminal, and determine the partition on which your Linux system is hosted. Issue the command

   sudo parted
   

   and then, when the prompt appears,type p. This diplays the disk partition table. Your partition is neither the swap nor an the extended partition (if you have it, you might not have one). The partition you are interested in is the one with the boot flag. Let us assume it is /dev/sda1. Quit parted by menas of q, then

3. issue the command

   sudo fsck /dev/sda1
   

   When done, give the command

   sudo shutdown -h now
   

4. Now remove the USB stick, and you should be able to boot normally.