I accidentally deleted the start up disk to my MacBook pro and now it. won't start up at all. I can load it to the Mac Recovery Mode and from here I'm trying to reinstall OS X ... but am unable to as I don't have the start up disk to save it to. Does anyone know how I can reinstall/ download a start up disk?
[Re-Titled by Moderator]
MacBook Air 13″, macOS 10.15
Depending on which version of macOS is being offered on the Recovery screen, you may need to reformat the startup drive.
If Reinstall macOS... doesn't say High Sierra or Mojave or Catalina, then you'll need to to reformat the drive using Disk Utility. That can be found in the menu bar at the top of the screen.
To reinstall Sierra or earlier macOS versions, the drive must be formatted as Mac OS Extended (Journaled) and you must use the GUID partition scheme. Give the drive the name "Macintosh HD".
To reinstall High Sierra, Mojave or Catalina, then use the APFS format, also with the GUID partition scheme and the same "Macintosh HD" drive name.
Depending on which version of macOS is being offered on the Recovery screen, you may need to reformat the startup drive.
If Reinstall macOS... doesn't say High Sierra or Mojave or Catalina, then you'll need to to reformat the drive using Disk Utility. That can be found in the menu bar at the top of the screen.
To reinstall Sierra or earlier macOS versions, the drive must be formatted as Mac OS Extended (Journaled) and you must use the GUID partition scheme. Give the drive the name "Macintosh HD".
To reinstall High Sierra, Mojave or Catalina, then use the APFS format, also with the GUID partition scheme and the same "Macintosh HD" drive name.
When I try to reinstall macOS, it gives me mountain lion as the only option so I’m guessing I need to reformat the drive? It’s at this point where I’m lost as I don’t which drive needs to be formatted, or how to do that as a lot of the boxes and buttons are greyed out.
I accidentally deleted my start up disk and not my MacBook won't load.
