Boot partition disappeared.


macrumors newbie
Original poster
May 13, 2019
Cannot boot, i get the folder with the question mark. I can boot to a USB, disk utility shows the disk as 1.19GB when in fact the disk is 250GB. Verification says all is ok. All other options are greyed out. I tried to reinstall the OS but the disk is "locked". My understanding is the 1.19GB partition is the recovery partition (which I cannot boot into) and primary partition is non existent.

When I try to select the boot partition, the only boot available is the one on the USB. Not sure where to turn, would appreciate some help.