unable to mount root fs on unknown-block(0 0)
yum remove kernel-3.10.0-1062.18.1.el7.x86_64
por ultimo ejecutamos una actualización al sistema
yum update
o
dnf update
https://tutorialesit.com/linux-error-kernel-panic-not-syncing-vfs-unable-to-mount-root-fs-on-unknown-block/