error: /boot/vmlinuz-4.15.0-29-generic has invalid signature error you need to load the kernel first
105771
vmlinuz-4.18.12-041812-generic has invalid signature
7372
Kernel panic after update to 4.4.0-108-generic
16464
How do I resolve a GRUB: “invalid arch independent ELF magic” error?
22116
How to enable numlock at boot time for login screen?
154718
Apparmor not starting with kernel LSM error
133478
Ubuntu 16.04: grub-efi-amd64-signed failed to install into /target/ error
8046
bcmwl-kernel-source broken on kernel: 5.8.0-34-generic
45430
How to switch between low latency and generic kernels?
12969
Virtualbox Kernel driver not installed
29652
GRUB_TIMEOUT in /etc/default/grub not changing the wait time with LVM
17596
Invalid signature for Kali Linux repositories : "The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository"
148018
VBox on 14.04: Kernel driver not installed (rc=-1908)
54223
On 14.04, my kernel version is 3.11.0-18?
35566
Kernel did not upgrade between 14.04 LTS to 16.04 LTS
141240
Problem booting after updating from Ubuntu 14.10 to 15.04
88198
Network booting couldn't find kernel image
38413
Cannot remove old kernel showing error code 1