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OS/400 Release Currently Installed Book To Use For Upgrade and Software Installation
V4R5
V4R4
V4R3
V4R2
V4R1
V3R7
V3R7 and V4R1*
If you have one of these releases installed on your system, your system
already runs on the RISC architecture. Use this book (AS/400e 940x
RISC-to-RISC Road Map, SA41-5155-04) for the upgrade. Use the book
Software Installation, SC41-5120-04, to replace the installed operating system
and licensed programs. Use the book Backup and Recovery, SC41-5304-04, for
the save and restore requirements of these procedures.
Note: * You cannot upgrade directly from V3R7 to V4R4 or V4R5. You must
first upgrade V3R7 to V4R2 or V4R3.
Note: * You cannot upgrade directly from V4R1 to V4R5. You must first
upgrade V4R1 to V4R3 or V4R4.
Note: V4R4 introduced logical partitions. Go to the Information Center for
help with setting up, upgrades to and maintaining logical partitions.
See the Software Installation book for other software requirements and
limitations prior to the OS/400 upgrade.
The Backup and Recovery book is now located in the AS/400 Information
Center, SK3T-2027-03.
Chapter 1. Overview of RISC-to-RISC Upgrades and Data Migrations 5