Commands hanging terminal on laptop

Hi again,

I have a laptop which has the base QNXRTP installed. When I try to run
commands on a terminal more often than not they just hang the terminal. The
commands in particular that do it every time are ‘df’ and ‘mount’. Is my
laptop just not suitable for QNXRTP? It is a Compaq Presario 1235.

I have booted using the alternate boot image and still no difference. Any