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Cannot remove Boot Camp partition

Hello! I want to remove my Boot Camp partition but I can't. Boot Camp, for whatever reason cannot detect my Boot Camp partition. Please help me.


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MacBook Air, macOS High Sierra (10.13.2)

Posted on Jan 14, 2018 8:59 AM

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Posted on Jan 15, 2018 9:51 AM

FAT partitions cannot be merged. So we convert them to JHFS+, merge them, convert them back to FAT, and allow BCA to restore them.


  • Erase and Convert disk0s3 to a JHFS+ volume - diskutil eraseVolume jhfs+ BC1 disk0s3
  • Erase and Convert disk0s4 to a JHFS+ volume - diskutil eraseVolume jhfs+ BC2 disk0s4
  • Merge the two chunks - diskutil mergePartitions jhfs+ BCMP dik0s3 disk0s4
  • Check the results - diskutil list
  • If you see only disk0s3 (and do not see disk0s4 any more), then
    • diskutil eraseVolume fat32 BOOTCAMP disk0s3
    • and now run BC Assistant and click on Restore/Remove.
7 replies
Question marked as Best reply

Jan 15, 2018 9:51 AM in response to McGamerrMc

FAT partitions cannot be merged. So we convert them to JHFS+, merge them, convert them back to FAT, and allow BCA to restore them.


  • Erase and Convert disk0s3 to a JHFS+ volume - diskutil eraseVolume jhfs+ BC1 disk0s3
  • Erase and Convert disk0s4 to a JHFS+ volume - diskutil eraseVolume jhfs+ BC2 disk0s4
  • Merge the two chunks - diskutil mergePartitions jhfs+ BCMP dik0s3 disk0s4
  • Check the results - diskutil list
  • If you see only disk0s3 (and do not see disk0s4 any more), then
    • diskutil eraseVolume fat32 BOOTCAMP disk0s3
    • and now run BC Assistant and click on Restore/Remove.

Jan 14, 2018 9:29 AM in response to McGamerrMc

In Terminal, run (only once) and post the output of


diskutil eraseVolume jhfs+ BC1 disk0s3

diskutil eraseVolume jhfs+ BC2 disk0s4

diskutil mergePartitions jhfs+ BCMP dik0s3 disk0s4

diskutil list


If you see only disk0s3 (and do not see disk0s4 any more), then


diskutil eraseVolume fat32 BOOTCAMP disk0s3


and now run BC Assistant and click on Restore/Remove.

Cannot remove Boot Camp partition

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