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

I suggest disconnecting the external 1TB TM disk to avoid any issues. In your case, run

diskutil eraseVolume jhfs+ BC1 disk0s3

diskutil eraseVolume jhfs+ BC2 disk0s4

diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s4

diskutil list

If you only see disk0s3, then

diskutil eraseVolume fat32 BOOTCAMP disk0s3

and run BCA and click on Restore/Remove.

Can someone help me too ... i want to delet my W10 Bootcamp partition and also got the error that everyone here had.

This is what i got from the terminal:

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_APFS Container disk1 414.4 GB disk0s2

3: Microsoft Basic Data BOOTCAMP 84.6 GB disk0s3

4: Windows Recovery 471.9 MB disk0s4

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +414.4 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 240.1 GB disk1s1

2: APFS Volume Preboot 22.5 MB disk1s2

3: APFS Volume Recovery 506.6 MB disk1s3

4: APFS Volume VM 2.1 GB disk1s4

/dev/disk2 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme +996.8 GB disk2

1: EFI EFI 209.7 MB disk2s1

2: Apple_HFS Cópias de segurança ... 996.4 GB disk2s2

diskutil eraseVolume jhfs+ BC1 disk0s3

diskutil eraseVolume jhfs+ BC2 disk0s4

diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s4

diskutil list

If you only see disk0s3, then

diskutil eraseVolume fat32 BOOTCAMP disk0s3

and run BCA and click on Restore/Remove.

Hii,

could you help me to fix this error on my macbook air high siera 10.13.2,

i already execute command "diskutil eraseVolume fat32 BOOTCAMP disk0s4" and than "Finished erase on disk0s4 BOOTCAMP", but when open Bootcamp Assistant the error still shown "the startup disk cannot be partitioned or restored to a single partition ".

this is my mac partition :

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 121.3 GB disk0

1: EFI EFI 314.6 MB disk0s1

2: Apple_APFS Container disk1 71.0 GB disk0s2

3: Microsoft Reserved 16.8 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 48.9 GB disk0s4

5: Windows Recovery 470.8 MB disk0s5

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +71.0 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 62.2 GB disk1s1

2: APFS Volume Preboot 19.6 MB disk1s2

3: APFS Volume Recovery 506.6 MB disk1s3

4: APFS Volume VM 2.1 GB disk1s4

Do not run the following commands more than once.

diskutil eraseVolume jhfs+ BC1 disk0s3

diskutil eraseVolume jhfs+ BC2 disk0s4

diskutil eraseVolume jhfs+ BC3 disk0s5

diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s5

diskutil list

If you only see disk0s3, then

diskutil eraseVolume fat32 BOOTCAMP disk0s3

and run BCA and click on Restore/Remove.

beanthe3rd wrote:

Please help me, I already used some of the commands listed here but forget which ones they were, thanks

In your specific case, try

diskutil eraseVolume jhfs+ BC1 disk0s3

diskutil eraseVolume jhfs+ BC2 disk0s4

diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s4

diskutil list

If you only see disk0s3, then

diskutil eraseVolume fat32 BOOTCAMP disk0s3

and run BCA and click on Restore/Remove.

Hi RyanKM11, can you also help me? having the same problem here, but want to make sure I didnt do the wrong drive. Many thanks in advance!

/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 449.9 GB disk0s2

3: Apple_Boot 134.2 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 50.1 GB disk0s4

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +449.9 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 268.0 GB disk1s1

2: APFS Volume Preboot 22.0 MB disk1s2

3: APFS Volume Recovery 506.6 MB disk1s3

4: APFS Volume VM 2.1 GB disk1s4

Hi,

All I did was just a normal upgrade from Sierra to High Sierra. Before when I was using Sierra, I already have a partition for Bootcamp. I am assuming that the current partition structure reflects a normal upgrade result from Sierra->High Sierra (using APFS).

So far I tried opening bootcamp assistant and When I clicked continue, all i got was the error message about partition that everyone gets.

What is the year/model of your Mac (do not post the serial number)? Did you have any issues during the upgrade?

Post the output of

sudo dd if=/dev/rdisk0s4 count=1 2>/dev/null | hexdump -C

You may have to disable SIP.

I assume you manually partitioned the disk using Disk Utility and installed Windows using EFI boot. If yes, given the current layout, the Free Space from disk0s4-disk0s5 can only go to "Data". If that works for you then,

diskutil eraseVolume free free disk0s4

diskutil eraseVolume free free disk0s5

diskutil resizeVolume disk0s3 R

diskutil list

It's a long time since I installed Windows 10 but I remember that I had followed Bootcamp guideline to install.

At first, I divided my SSD into 2 partitions (Macintosh HD & Data) then I install Bootcamp and windows 10 via Bootcamp. I am NOT sure that Windows 10 partition was separated from Macintosh HD or Data.

So what I want to do now is increasing the size of Macintosh HD.

I'm very appreciated if you have any further advices.

Thank you.

No, you cannot use the same steps. Updated steps are

diskutil eraseVolume jhfs+ BC1 disk0s4

diskutil eraseVolume jhfs+ BC2 disk0s5

diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s5

diskutil list

If you only see dsk0s3, then

diskutil eraseVolume fat32 BOOTCAMP disk0s3

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

Once you have space back in the Container, then recreate a partition for data and restore Data.

Hi Loner,

I got the same error message when trying to delete bootcamp Windows 10.

Here is the result of disskutil command from my MacPro 13 inch 2015. Please let me know your command. Thanks.

/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 166.4 GB disk0s2

3: Microsoft Basic Data BOOTCAMP 83.3 GB disk0s3

4: Windows Recovery 910.2 MB disk0s4

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +166.4 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 120.3 GB disk1s1

2: APFS Volume Preboot 20.5 MB disk1s2

3: APFS Volume Recovery 506.6 MB disk1s3

4: APFS Volume VM 1.1 GB disk1s4

Run (only once)

diskutil eraseVolume jhfs+ BC1 disk0s3

diskutil eraseVolume jhfs+ BC2 disk0s4

diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s4

diskutil list

If you only see disk0s3, then

diskutil eraseVolume fat32 BOOTCAMP disk0s3

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

Hi Loner,

Thank you so much for your quick reply. I thought you would come back to me at least one day later. However you replied to me after 16 mins!!! Work perfectly and save me lots of time. You are great!!! Have a good day!