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I already have a back up TB disk ready to start a new back up to transer data from my old mac to the new one, but my brother in law already used it before. How can I erase data from the external back up disk in order to start a new one?
MacBook Air 13″, macOS 12.0
You use Disk Utility:
https://support.apple.com/en-ca/guide/disk-utility/welcome/mac
if you are new to DU here is a tutorial:
https://www.hellotech.com/guide/for/how-to-format-a-hard-drive-for-mac
You use Disk Utility:
https://support.apple.com/en-ca/guide/disk-utility/welcome/mac
if you are new to DU here is a tutorial:
https://www.hellotech.com/guide/for/how-to-format-a-hard-drive-for-mac
how can I erase data from old back up disk?
