Boot data
To boot Linux®, you generally need a kernel image, boot loader code, kernel parameters, and an initial RAM disk image.
For sequential I/O boot devices, z/VM® reader and tape, the order in which this data is provided is significant. For random access devices, there is no required order.
On Ubuntu Server 20.04.1, kernel images are
installed into the /boot directory and are named vmlinuz-<version>, where <version> is the same as the output of the uname -r
command. For information about where to find the images and how to start an installation, see the
Ubuntu Installation Guide at
https://help.ubuntu.com/18.04/installation-guide/s390x