Can’t reinstall Mac OS el capital because Recovery HD disk is locked. Anyone know how to bypass this? I'm trying to reinstall Mac OS X El Capitan on my 2009 MacBook pro. Disk Utility lists a single SSD with a capacity of 250.06GB and a single partition (OS X Base system) that is taking up 249.85GB. When I try to create another partition it says that I need to enable journaling, but the option is greyed out. I also can't reinstall from the internet because the OS X Base System partition is locked.
Do you have any data that you would like to keep? If not, then I would recommend erasing everything and resintalling macOS from Internet Recovery. If not, then try running First Aid. If none of these work, use fsck from Single-User Mode.