It was on old Intel Mac that was about one year old that was used for magazine publishing using InDesign. I don't remember the model. The SSD was installed a year or so after SSDs became available in an attempt to speed up the system. The SSD was expensive. The speed was increased. Until one day about six years after installation the system would not boot. Back then there were no utilities to gauge the health of the SSD. Nothing was lost as everything was backed up. Rather than replace the SSD we just replaced the Mac sending the old Mac off to be recycled.what system?