Kia helped me out after a crash of my SSD at a wrong and busy moment. He was able to help fast and gave good advice on what to do.
On his advice, we used an SSD from another MacBook and installed a new big HDD in the other MacBook.
I am up and travelling with a good and fast SSD and the family/photo MacBook has gained a lot of extra disk space.
Will take his 24/7 monitoring service, to prevent the next crash.