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

I am running Mojave and I am trying to remove the bootcamp partition as well. I thought i had followed all your advice but when I run BC Assistant I do not get the remove partition selection. It only says to install windows. Here is my diskutil list.

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *251.0 GB
disk0

1: EFI EFI 209.7 MB
disk0s1

2: Apple_APFS Container disk1 150.0 GB
disk0s2

3: Apple_HFS BC1 100.1 GB
disk0s3

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +150.0 GB
disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 60.8 GB disk1s1

2: APFS Volume Preboot 49.5 MB disk1s2

3: APFS Volume Recovery 512.8 MB
disk1s3

4: APFS Volume VM 1.1 GB disk1s4

Any help is greatly appreciated.

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *251.0 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:                 Apple_APFS Container disk1         200.0 GB   disk0s2

   3:       Microsoft Basic Data BOOTCAMP                50.3 GB    disk0s3

   4:       Microsoft Basic Data BOOTCAMP                471.9 MB   disk0s4

/dev/disk1 (synthesized):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      APFS Container Scheme -                      +200.0 GB   disk1

                                 Physical Store disk0s2

   1:                APFS Volume The Eleven              86.9 GB    disk1s1

   2:                APFS Volume Preboot                 43.5 MB    disk1s2

   3:                APFS Volume Recovery                512.8 MB   disk1s3

   4:                APFS Volume VM                      1.1 GB     disk1s4

/dev/disk2 (disk image):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:     Apple_partition_scheme                        +24.3 MB    disk2

   1:        Apple_partition_map                         32.3 KB    disk2s1

   2:                  Apple_HFS Flash Player            24.2 MB    disk2s2

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *251.0 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:                 Apple_APFS Container disk1         200.0 GB   disk0s2

   3:                  Apple_HFS BC1                     50.6 GB    disk0s3

/dev/disk1 (synthesized):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      APFS Container Scheme -                      +200.0 GB   disk1

                                 Physical Store disk0s2

   1:                APFS Volume The Eleven              87.0 GB    disk1s1

   2:                APFS Volume Preboot                 43.5 MB    disk1s2

   3:                APFS Volume Recovery                512.8 MB   disk1s3

   4:                APFS Volume VM                      1.1 GB     disk1s4

/dev/disk2 (disk image):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:     Apple_partition_scheme                        +24.3 MB    disk2

   1:        Apple_partition_map                         32.3 KB    disk2s1

   2:                  Apple_HFS Flash Player            24.2 MB    disk2s2

Tried that, when I ran BC Assistant, it said your disk couldn't be restored into a single one. Please check disk utility. And then closed. Now if I look at Disk Utility I only see one volume, and if I run BC it just talks about installing windows.

MBP 2017, macOS HS 10.13.6 (17G5019).

Similar problem where I manually removed the BC partition for Windows (mistake) from the disk utility. Now I can’t reinstall Windows nor reclaim the partitioned space

$ diskutil list

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 500.3 GB disk0

1: EFI EFI 314.6 MB disk0s1

2: Apple_APFS Container disk1 451.0 GB disk0s2

3: Windows Recovery 911.2 MB disk0s3

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +451.0 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 271.1 GB disk1s1

2: APFS Volume Preboot 20.8 MB disk1s2

3: APFS Volume Recovery 514.9 MB disk1s3

4: APFS Volume VM 1.1 GB disk1s4

$ diskutil cs list

No CoreStorage logical volume groups found

$ diskutil apfs list

APFS Container (1 found)

|

+-- Container disk1 22ABD4D5-A808-4DFC-9B53-35986E99B647

====================================================

APFS Container Reference: disk1

Size (Capacity Ceiling): 451009290240 B (451.0 GB)

Minimum Size: 282851692544 B (282.9 GB)

Capacity In Use By Volumes: 273991561216 B (274.0 GB) (60.8% used)

Capacity Not Allocated: 177017729024 B (177.0 GB) (39.2% free)

|

+-< Physical Store disk0s2 1437BCC6-B396-47DD-9665-E969EA680BBD

| -----------------------------------------------------------

| APFS Physical Store Disk: disk0s2

| Size: 451009290240 B (451.0 GB)

|

+-> Volume disk1s1 02E6062C-24F9-3635-8BB1-1D253F01E935

| ---------------------------------------------------

| APFS Volume Disk (Role): disk1s1 (No specific role)

| Name: Macintosh HD (Case-insensitive)

| Mount Point: /

| Capacity Consumed: 271151403008 B (271.2 GB)

| FileVault: Yes (Unlocked)

|

+-> Volume disk1s2 FC60E3D1-C3A0-4E87-856B-E1766DF0A74C

| ---------------------------------------------------

| APFS Volume Disk (Role): disk1s2 (Preboot)

| Name: Preboot (Case-insensitive)

| Mount Point: Not Mounted

| Capacity Consumed: 20799488 B (20.8 MB)

| FileVault: No

|

+-> Volume disk1s3 42F95A6D-E8F9-449B-9DFF-EC0E21B1B8AD

| ---------------------------------------------------

| APFS Volume Disk (Role): disk1s3 (Recovery)

| Name: Recovery (Case-insensitive)

| Mount Point: Not Mounted

| Capacity Consumed: 514945024 B (514.9 MB)

| FileVault: No

|

+-> Volume disk1s4 35917B15-9DB2-4A76-9E31-5A85B3070436

---------------------------------------------------

APFS Volume Disk (Role): disk1s4 (VM)

Name: VM (Case-insensitive)

Mount Point: /private/var/vm

Capacity Consumed: 2147504128 B (2.1 GB)

FileVault: No

• Step 1

In your specific case, given the current state, try

diskutil eraseVolume jhfs+ BC3 disk0s3

diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s5

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.

Sure thing! Here you go –

APFS Containers (2 found)

|

+-- Container disk1 89390522-6C84-454E-AD07-B540C987BEFF

|   ====================================================

|   APFS Container Reference:     disk1

|   Size (Capacity Ceiling):      153999998976 B (154.0 GB)

|   Capacity In Use By Volumes:   85373341696 B (85.4 GB) (55.4% used)

|   Capacity Not Allocated:       68626657280 B (68.6 GB) (44.6% free)

|   |

|   +-< Physical Store disk0s2 B58F82C8-54B7-4A9C-A472-A200722D9E31

|   |   -----------------------------------------------------------

|   |   APFS Physical Store Disk:   disk0s2

|   |   Size:                       153999998976 B (154.0 GB)

|   |

|   +-> Volume disk1s1 31DF47AB-069F-4118-897C-A825E8159328

|   |   ---------------------------------------------------

|   |   APFS Volume Disk (Role):   disk1s1 (No specific role)

|   |   Name:                      Macintosh HD (Case-insensitive)

|   |   Mount Point:               /

|   |   Capacity Consumed:         79317340160 B (79.3 GB)

|   |   FileVault:                 Yes (Unlocked)

|   |

|   +-> Volume disk1s2 2A195B0C-DF8A-482E-9CC1-8C1138FDC362

|   |   ---------------------------------------------------

|   |   APFS Volume Disk (Role):   disk1s2 (Preboot)

|   |   Name:                      Preboot (Case-insensitive)

|   |   Mount Point:               Not Mounted

|   |   Capacity Consumed:         45047808 B (45.0 MB)

|   |   FileVault:                 No

|   |

|   +-> Volume disk1s3 2E5DBE1C-C851-4E9A-A9C9-DF76409C4068

|   |   ---------------------------------------------------

|   |   APFS Volume Disk (Role):   disk1s3 (Recovery)

|   |   Name:                      Recovery (Case-insensitive)

|   |   Mount Point:               Not Mounted

|   |   Capacity Consumed:         512770048 B (512.8 MB)

|   |   FileVault:                 No

|   |

|   +-> Volume disk1s4 C435BFAB-B7C3-4788-AE08-48574FED8900

|       ---------------------------------------------------

|       APFS Volume Disk (Role):   disk1s4 (VM)

|       Name:                      VM (Case-insensitive)

|       Mount Point:               /private/var/vm

|       Capacity Consumed:         5368729600 B (5.4 GB)

|       FileVault:                 No (Encrypted at rest)

|

+-- Container disk2 102BF970-24B4-4C67-B76F-F0A47EA76FA9

    ====================================================

    APFS Container Reference:     disk2

    Size (Capacity Ceiling):      88684802048 B (88.7 GB)

    Capacity In Use By Volumes:   123572224 B (123.6 MB) (0.1% used)

    Capacity Not Allocated:       88561229824 B (88.6 GB) (99.9% free)

    |

    +-< Physical Store disk0s4 5689A2BC-6270-4D0B-B078-A7F374DA2920

    |   -----------------------------------------------------------

    |   APFS Physical Store Disk:   disk0s4

    |   Size:                       88684802048 B (88.7 GB)

    |

    +-> Volume disk2s1 A56CB98D-CDBA-4A9B-A168-6E8BA788A050

        ---------------------------------------------------

        APFS Volume Disk (Role):   disk2s1 (No specific role)

        Name:                      BOOTCAMP (Case-insensitive)

        Mount Point:               Not Mounted

        Capacity Consumed:         798720 B (798.7 KB)

        FileVault:                 No (Encrypted at rest)

Excellent. Please back up macOS before your next attempt at installing Windows.

Excellent. Just a minor typo. Please remember to back up macOS before further adventures in the Windows Wonderland.

thank u.. now bootcamp is showing The Windows support software could not be saved to the selected drive. i cant continue the installation

macbook air 5,2 mid 2012 (magsafe 2 model)
what if i install the regular macos?

Run

diskutil eraseVolume jhfs+ BOOTCAMP disk0s3

and run BCA and click on Remove/Restore.

It works perfectly. Thanks so much!