Can't start mac because startup disk is missing First off, I apologize if this is kind of jumbled. I am just extremely stressed because of this.
Long story short, i fell asleep with my mac playing Netflix. When I wake up i have to plug it in because it died and when i plugged it in, it would only load bootcamp. I go to select the startup disk and Macintosh HD is gone. Any ideas on how to fix this?


It is important that I recover my data. I have an old time machine backup if that would help in any way. Is there a way to use it or an external drive to somehow get the files if they still exist?
Partial answer: boot into recovery mode and open disk utility.  If the SSD is visible, do “first aid.”
What to do next depends on what you see in Disk Utility.