A computer system is rebooted after updating a boot image without running platform firmware with its power-on self-test of system hardware devices and without retrieving all of the modules included in a boot image from an external source and reloading them into system memory. The reboot process includes the steps of loading one or more updated modules of the boot image into the system memory, executing the boot loader module to load for execution modules of the boot image including a system software kernel and the updated modules, and transferring execution control to the system software kernel.

Efficient reboot of an operating system executed in a virtual machine

A method includes receiving a firmware update package at an information handling system. The update package includes a payload containing a transition basic input-output system (BIOS) and another payload containing a new BIOS. The new BIOS is stored at an Extensible Firmware Interface system partition (ESP). A firmware image at a BIOS flash device at the information handling system is updated using the new BIOS retrieved from the ESP.

Multi-stage firmware update method and system therefor

A server node initially running an original operating system fetches an installation image of an operating system comprising a new root file system for the server node. The server node mounts the installation image into a temporary file storage. The server node changes a root file system of the server node to the new root file system and maintain the root file system as an old root file system. The server node installs new firmware for hardware components of the server node. The server node installs the operating system. The installation of the operating system includes a mount of a root drive at a directory for the installation. The installation of the operating system also includes an extraction of the new root file system into the directory. The server node boots to the operating system with a new kernel replacing the original operating system.

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