Ubuntu 14.04 LTS
I might have deleted the Kernel whilst trying to delete 10GB of old kernels. I haven't switched the PC off yet.
@Karel suggests an answer in a virtually identical question: Might have deleted kernel, but haven't shut off computer yet but it is vague on how to find grub (boot menu) device. I don't have enough reputation to comment there.
sudo apt-get install --reinstall linux-image-generic sudo grub-install /dev/sdX sudo update-grub
Disks program shows that, I have one SSD (device sda), split thus:
| | Extended Partition | | | | Partition 3 | | | Filesystem | 129GB | Filesystem | | Partition 1 |____________________| Partition 2 | | 25GB EXT4 | Filesystem | 102GB FAT | | | Partition 5 | | | | 129GB EXT4 | |
The 25GB is Linux (bootable); the 129GB is Linux and the 102GB is W95 FAT32
So I'm guessing that I need to replace the middle command with either
sudo grub-install /dev/sda or
sudo grub-install /dev/sda1 When @Karel suggests to enter the device name, I don't know if he means me to include the partition number.