Back Up iPhone to SD card rather than MacBook Air Hard Drive.
Can I back up my iPhone to an SD card instead of my MacBook Air's hard drive?
MacBook Air
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Can I back up my iPhone to an SD card instead of my MacBook Air's hard drive?
MacBook Air
Apple does not recommend that.
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To avoid ruining any of your backup files, here's what you should know:
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copied from: Locate backups of your iPhone, iPad, and iPod touch - Apple Support
Apple does not recommend that.
...
To avoid ruining any of your backup files, here's what you should know:
...
copied from: Locate backups of your iPhone, iPad, and iPod touch - Apple Support
Back Up iPhone to SD card rather than MacBook Air Hard Drive.