SUSE 15 OS Updates via GRUB

by Ramses Soto-Navarro ramses@sotosystems.com, 10/26/2022

Overview
Copy Kernel
Modify GRUB
GRUB Boot Parameters
Erase GRUB Boot Entry
Troubleshooting


Overview

Brief notes on how to update SUSE 15 SP3 to SP4 via GRUB boot, without using the virtual guest CDROM. Perform an offline OS upgrade using the server’s own hard disk without a need to attach any devices (like USB drive or DVD ISO); use a local network source mounted repository for the installation media. The audience is experienced Linux administrators.

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