Setting inittab to 2 via the live CD I am now able to log into my box of VL7. Doing
vxconf it seems that I cannot anymore use the display setting of 1280x1024
which is the correct one for my 19" LCD. That settings hangs now the system.
1024x768 is working, however, naturally too large.
I am using an external video card. May that is the problem. Will check tomorrow
if the onboard card is working.