How to uninstall Big Sur from an external hard drive?
I installed BS on an external hard drive. I never use it and I want to store data on my hard drive instead. Can anyone tell me how I can uninstall the OS? Thank you!
MacBook Air 13″, macOS 10.15
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start the machine using your internal drive and then erase the external drive in disk utility by erasing it at the top level of the drive.
see this apple support article: Erase and reformat a storage device in Disk Utility on Mac - Apple Support
