It appears that certain vendors (Oracle, for instance) don't like the standard UNIX utilities for mounting filesystems - so they did us all a favor and went to something called Portable File system (PFS). HPUX supports the whole range of pfs mounts; you can check the man pages for more information.

First, make sure all pfs_mount related patches are up to date. Then, run the following commands so they don't crap out when root logs out:

1. pfs_mountd
2. pfsd 4
3. Either edit the /etc/pfs_fstab to make it look like:
   
   /${cd_dev} /${mount_dir} pfs-rrip xlat=unix 0 0
   
   or use the command line thusly:
   
   pfs_mount -o ro -t pfs_rrip -xlat=unix /${cd_dev} /${mount_dir}