My MacBook Air is asking me to choose a start up disk, how do I fix it?

chandni777 wrote:

https://discussions.apple.com/content/attachment/84eeb2e0-113f-4553-a821-0d37bfebcbee

[Re-Titled by Moderator]

If your Mac starts up to Options with a gear icon

If your Mac starts up to Options with a gear icon - Apple Support

If your Mac doesn't start up all the way

If your Mac doesn't start up all the way - Apple Support

Pressed the Command & R button, but I met with a Lock Screen upon boot.

Firmware lock

Set a firmware password on your Mac - Apple Support

Internet Recovery

Boot into Internet Recovery (Option Command R) and from the dropdown menu: Utilities>  Disk Utility> run the First Aid on your Macintosh HD (and the "Macintosh HD-Data" volume as well ; If errors are found and repaired, run again until no errors reported.

ref: How to repair a Mac disk with Disk Utility - Apple Support

chandni777 wrote:

https://discussions.apple.com/content/attachment/84eeb2e0-113f-4553-a821-0d37bfebcbee

[Re-Titled by Moderator]

Have you somehow or from some reason changed the Startup Disk from the Internal Drive to another Drive ?