Okay, now it's working! My new SSD wasn't initialized, I did it from the disk utility. I thought I could do all the OS updates but I'm stuck on High Sierra on this iMac mid 2011. Solutions to boost the machine to install the latest updates? Thanks a lot

Hello. I ordered the repair pack and installed the new CRUCIAL MX500 SSD. I am trying to restore a time machine backup but the disk search is spinning. The SSD is not found, what should I do? Thanks for your help.