Question : Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Answered by : chris-kirimi
// You are missing the initramfs for that kernel.
// Choose another kernel from the GRUB menu under Advanced options for Ubuntu and run sudo update-initramfs -u -k version
// to generate the initrd for version
// (replace version with the kernel version string such as 4.15.0-36-generic) then sudo update-grub
Source : https://askubuntu.com/questions/41930/kernel-panic-not-syncing-vfs-unable-to-mount-root-fs-on-unknown-block0-0#41939 | Last Update : Mon, 11 Sep 23