Boot data

Ubuntu 22.04 LTS LPAR mode z/VM guest KVM guest

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 22.04 LTS, 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. There is often more than one kernel image installed; the currently active kernel image is indicated by a symbolic link named 'vmlinuz' (without version suffix). For information about where to find the images and how to start an installation, see the Ubuntu Installation Guide, see:

For LPAR: https://ubuntu.com/server/docs/install/s390x-lpar
For z/VM: https://ubuntu.com/server/docs/install/s390x-zvm

https://help.ubuntu.com/18.04/installation-guide/s390x