I have a new MacBook Air running OS Monterey 12.6. I have wiped all data from my old Mac Mini hard drive and am trying to use the Mini as my external backup disk. Can you tell me how to establish a matching OS (12.6) on this empty disk? I have connected it to my MB Air and mounted it, but it has absolutely nothing on it since I did a multi-wipe using Disk Utility with many passes.
Thanks in advance for your advice!
MacBook Air
How to reinstall macOS - Apple Support
It would be better to attach an external drive to the Mini and back up to that over the network.
Back up to a shared folder with Time Machine on Mac - Apple Support
If you really want to use the internal startup volume on the Mini as your backup drive, it might be best to create a new Volume on that drive using Disk Utility. Share that out as the backup destination as per instructions above.
How to reinstall macOS - Apple Support
It would be better to attach an external drive to the Mini and back up to that over the network.
Back up to a shared folder with Time Machine on Mac - Apple Support
If you really want to use the internal startup volume on the Mini as your backup drive, it might be best to create a new Volume on that drive using Disk Utility. Share that out as the backup destination as per instructions above.
Creating a backup disk from a wiped hard drive
