3.3. Workflow for the Driver Update
The Driver Update workflow consists of the following steps:
The system boots from the installation CD or floppy disk syslinux/isolinux starts up
The user adds 'driverupdate=1' to the kernel command line (or activates driver updates using the graphical boot loader interface). (optional. see Section 2.4)
syslinux prompts the user for an "Update Medium" if a media change has been requested.
The user inserts the new media and presses the Enter key, syslinux boots into the update mode of linuxrc
linuxrc mounts the media
linuxrc copies all files from the install directory into a directory in a RAM disk mounted below /update.
linuxrc loads all driver modules below the modules directory by first unloading all modules with the same name and loading the new modules from this directory. This happens in the order the modules have been installed on the media! This is important if some driver modules depend on other.
See Section 2.1.1 how the new layout since SuSE Linux 9.0 / UnitedLinux SP3 handles this.
linuxrc unmounts the update media
now linuxrc kicks back and starts the Installer to continue the installation
before starting the installation of packages, the Installer first execute the update.pre script.
after the initial installation, the Installer extracts update.tar.gz in the root directory of the installed system and then runs update.post.