I have a failed RAID set, and am trying to add a replacement drive. Every time I try to repair, add member, or add spare, it fails immediately with com.apple.StorageKit error 118. Does anyone know what this error means? Any suggestions on how to resolve?

  • Are you booted into the Recovery Partition or Internet Recovery? Are you attempting to erase the partition instead of the top level disk? You need to erase the disk. – Udhy Sep 25 '19 at 11:10
  • No, computer is running in normal mode. After I select repair, add member, or add spare, it lets me select which disk to add. I have two different empty disks and get the same error on both. It only allows the two empty disks to be selected. After I select the disk is when the error comes. Note that if I create a new raid set and select the two disks, it does successfully create the raid set. But it fails each time I try to add one of the empty disks to the existing raid set. – lschult2 Sep 25 '19 at 15:44
  • Can you share the screenshot of your error? – Udhy Sep 25 '19 at 15:51

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