MacBook Air internal disk not showing during macOS reinstall
why does my MacBook Air not show the internal disk when I’m trying to reload the MacOS after a full reset
MacBook Air 11″, OS X 10.11
Question marked as
Not sure how you got to where you are now, but you must format the internal disk before the OS installer will recognize it as a valid location for OS installation.
To reinstall El Capitan you'll need to format the drive as Mac OS Extended (Journaled) with a GUID partition map.
If you can boot that Mac in recovery mode, then you can use the Disk Utility app to format the drive.
How to reinstall macOS - Apple Support
Reinstall macOS - Apple Support