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The Startup Disk cannot be partitioned or restored to a single partion

I partitioned my harddrive in the past with bootcamp but now i get this error

"The startup disk cannot be partitioned or restored to a single partition"

when i run bootcamp assistant again.


Please help!

MacBook Pro 13", macOS 10.13

Posted on Jun 8, 2019 9:20 PM

Reply
Question marked as Best reply

Posted on Jun 9, 2019 8:10 AM

In your specific case, given the current state, try


  • Step 1


diskutil eraseVolume jhfs+ BC1 disk0s3

diskutil eraseVolume jhfs+ BC2 disk0s4


diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s4

diskutil list


  • Step 2


If you see only disk0s3 as the last entry under disk0, then run


diskutil eraseVolume fat32 BOOTCAMP disk0s3


and retry removing the partition using BC Assistant only.

Similar questions

7 replies
Question marked as Best reply

Jun 9, 2019 8:10 AM in response to estralitasky

In your specific case, given the current state, try


  • Step 1


diskutil eraseVolume jhfs+ BC1 disk0s3

diskutil eraseVolume jhfs+ BC2 disk0s4


diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s4

diskutil list


  • Step 2


If you see only disk0s3 as the last entry under disk0, then run


diskutil eraseVolume fat32 BOOTCAMP disk0s3


and retry removing the partition using BC Assistant only.

Jun 9, 2019 8:03 AM in response to Loner T

Melissas-MacBook-Pro:~ estralitasky$ diskutil list


/dev/disk0 (internal, physical):


   #:                       TYPE NAME                    SIZE       IDENTIFIER


   0:      GUID_partition_scheme                        *500.3 GB   disk0


   1:                        EFI EFI                     209.7 MB   disk0s1


   2:                 Apple_APFS Container disk1         440.0 GB   disk0s2


   3:       Microsoft Basic Data BOOTCAMP                59.6 GB    disk0s3


   4:           Windows Recovery                         501.2 MB   disk0s4




/dev/disk1 (synthesized):


   #:                       TYPE NAME                    SIZE       IDENTIFIER


   0:      APFS Container Scheme -                      +440.0 GB   disk1


                                 Physical Store disk0s2


   1:                APFS Volume Macintosh HD            351.6 GB   disk1s1


   2:                APFS Volume Preboot                 21.9 MB    disk1s2


   3:                APFS Volume Recovery                519.5 MB   disk1s3


   4:                APFS Volume VM                      2.1 GB     disk1s4


MacBook Pro (Retina, 13-inch, Early 2015)

macOS High Sierra 10.13.6

Jun 9, 2019 8:21 AM in response to Loner T

Melissas-MacBook-Pro:~ estralitasky$ diskutil eraseVolume jhfs+ BC2 disk0s4


Started erase on disk0s4


Unmounting disk


Error: -69874: Couldn't modify partition map


Melissas-MacBook-Pro:~ estralitasky$ diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s4


Could not find disk for disk0s4


Melissas-MacBook-Pro:~ estralitasky$ diskutil list


/dev/disk0 (internal, physical):


   #:                       TYPE NAME                    SIZE       IDENTIFIER


   0:      GUID_partition_scheme                        *500.3 GB   disk0


   1:                        EFI EFI                     209.7 MB   disk0s1


   2:                 Apple_APFS Container disk1         440.0 GB   disk0s2


   3:                  Apple_HFS BC1                     59.4 GB    disk0s3




/dev/disk1 (synthesized):


   #:                       TYPE NAME                    SIZE       IDENTIFIER


   0:      APFS Container Scheme -                      +440.0 GB   disk1


                                 Physical Store disk0s2


   1:                APFS Volume Macintosh HD            351.6 GB   disk1s1


   2:                APFS Volume Preboot                 21.9 MB    disk1s2


   3:                APFS Volume Recovery                519.5 MB   disk1s3


   4:                APFS Volume VM                      2.1 GB     disk1s4


The Startup Disk cannot be partitioned or restored to a single partion

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