Apple made it well-to-do to resizepartitions – lucid division of a storage machine into freestanding mountable volumes with dissimilar properties – several releases of macOS ago . A Macworld lector resized their master volume to 369 GB to set up a Boot Camp division , but then realized it was too small-scale . They wondered how to fix this .
In the right circumstance , you may plainly conform to these steps without own to back up the entire driving , erase and reformat it , and add up new divider .
Always back up your drive before attempting to resize partition in case something blend improper , or you incidentally chatter to go on a destructive military operation .
Disk Utility lets you resize partitions, but it can be hard to predict whether this will require erasing the partition or not until you click Apply.
I have n’t found a accomplished consistency in which drives have non - destructive resizable partitions or not . you could study a band of detail about macOS effort partitioning , and still find that a intensity that converge all the parameters for resizing without erasing , and still be tell apart by Disk Utility that the partition will be erased .
Disk Utility have you resize partition , but it can be hard to portend whether this will call for erasing the partition or not until you click Apply .
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If you require to erase to repartition , you should make a full clone of the drive , then boot from macOS Recovery and apply Disk Utility in that fashion to repartition , which will keep macOS Recovery integral if it ’s a inauguration volume . you may then alsorestore your partitionfrom a clone using Disk Utility as well .
Also take : How to partition a Mac hard cause or SSD , or create a APFS volumeandBest magnetic disc partition software for Mac .
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