Yes it looks like a disk becoming defective. The best way to be sure is to use a hp cdrom containing Diagnostic tools (iirc the last hpux support + would contains it). This cd is bootable and contains tools allowing you test your disk.
I don't have such a cd... I have only two HP cd sets: "HP-UX Applications/Patches 10.20" 5 CDs "Additional Core Enhancements HP-UX 10.20 Workstations" 1 CD
Do you know if one of them contains these tools?
If you have another system on which you can connect your suspected disk you can also try a dd cmd like:
dd if=/dev/rdsk/c0txd0 of=/dev/null bs=2048k (where you replace /dev/rdsk/c0txd0 by the actual disk path)
See my other post for results of backup... it provoced the same (or at least a similar) error :-/
I do not currently have another system I could put the disk in (I got a C200 but it is not in a working state right now). The disk does not contain too important data - but it was a lot of work to set up the router.
thx, Sebastian
