Back Up Your Mac Before Factory Reset. I believe that there must be some important files on your. Most users use Disk Utility to erase a disk or hard drive. But some Mac users might need to erase them from the command line on Mac OS. To do that, the only thing you need is a bit of precise syntax to make sure that you are erasing the proper disk. Here I'll show you how you can erase and format a disk using the command line. What you have done is upset the logical volume 'Macintosh HD'. For security reasons macOS Catalina splits the logical boot volume, in your case 'Macintosh HD' into two physical volumes, one for all the system files and another for the use data which has ' - Data' put on the end of the name.
I wanted to format my MacBook because there was a pervious owner that didn't delete their information. I went to disk utility and clicked Macintosh journal extension (Something like that) and erased it thinking I formatted my MacBook. afterwards, I turned off my MacBook. I turned it back on and a box with a question mark flashed but didnt start my MacBook up. I turned off my MacBook and did 'control + r' when I heard my MacBook starting up noise. now I have a spinning globe on my screen with '11:41' showing below the globe. What Do I Do To Fix This Deleted Macintosh Issue?