Thank you :-)

Unfortunately my English is far too bad to get hold of the technical terms - and my technical skills likewise :'-(

When I get to this paragraph, my understanding goes black :-) ...

I know that this is an old thread, but it is in top 3 when I make a google search for 'Event ID 158, disk ' and I have read it from start to end - and have used two days to get that annoying entry...