I’m engaged on an iMac which appears, from the very best I can inform, to have a failing SSD from a fusion drive. I’ve eliminated the HDD and changed with an SSD, however the system nonetheless crashes spontaneously, seemingly associated to the AppleSSD changing into “seen” by the OS. Usually the OS would not even discover that SSD, and when it does, and I’m going to format it, it doesn’t ever succeed. So if I may disable the SSD, that will permit me to inform if the crashes are brought on by the SSD. I’ve already tried changing the RAM and naturally I’ve already changed the HDD with an SSD. Taking the pc aside to take away the SSD bodily is extra work than it is price costwise, but when I may disable the port one way or the other such as you may be capable of do through a PC bios, that will be a fast method to check my concept. Any thought on how that will be doable? I’ve already advised it to not mount in disk utility, however that does not do the trick as a result of it appears to vanish and reappear by itself. It is a 2013 iMac.