HP-UX 11i v3 Read Before Installing or Updating, February 2007 (Initial Release)

Boot Disk Must Be at Least 9 GB for HP-UX 11i v3
HP-UX 11i v3 requires more space on the HP-UX boot disk
than prior HP-UX releases. Install may fail if your boot
disk is too small regardless of the total size of the root
volume.
What To Do
When configuring systems for installation, make sure the
boot disk is at least 9 GB.