This is part 2 of a 4 part series on the new IBM i 7.3 Upgrade. Links to the rest of the series are listed a the bottom of this article.
3. Increase the Licensed Internal Code space
If you are upgrading from 7.1 to 7.3 you need to increase the Licensed Internal Code space on the load source disk. All server models with IBM i 7.1 or earlier releases require more reserved storage before IBM i 7.2 or 7.3 can be installed. Your upgrade will stop during the installation if you do not allocate the additional space.
You can do this by issuing the GO LICPGM on the command line, selecting option 5 on the menu to Prepare for upgrade, and then selecting the option to increase License Internal Code space. Remember, your load source will need to be at least 70GB for a physical disk drive and 35GB for a virtual disk drive.