Will You Need To "Re-Install?"

Re-install means installing HP-UX onto a system that is already running HP-UX. There is one case that requires you to re-install either 9.x (the version you are currently running) or 10.01/10.10 (after you have completed the upgrade): this is if you want to convert your root disk to Logical Volume Manager (LVM).

LVM is the disk management scheme HP recommends for 10.x systems, on both the Series 800 (on which it was available as of 9.0) and the Series 700 (on which it was new for 10.0).

But LVM is not required for upgrade to 10.x, which continues to support "whole disk" access (as on 9.x Series 700) and hard partitions (as on 9.x Series 800, for disks that supported partitions as of HP-UX 9.04).

If you intend to convert your root disk to LVM, you should factor in additional downtime. This downtime does not need to coincide with the upgrade itself; the conversion cannot be done while the upgrade is in progress.

The options are: