Macbook Pro late 2012 - cannot delete Bootcamp partition

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8 points

Macbook Pro late 2012 - cannot delete Bootcamp partition

I have a Windows partition that practically never used. Now I want to remove it but Bootcamp Assistant gives the message "Boot disk cannot be divided into partitions or restored into a single partition" (more or less, I am translating from Italian) and "Install or remove Windows 10" check box is grayed out.

This is the output of diskutil list command:

/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 219.7 GB disk0s2

3: Apple_KernelCoreDump 1.1 GB disk0s3

4: Microsoft Basic Data BOOTCAMP 30.0 GB disk0s4

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +219.7 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 197.4 GB disk1s1

2: APFS Volume Preboot 54.0 MB disk1s2

3: APFS Volume Recovery 512.4 MB disk1s3

4: APFS Volume VM 1.1 GB disk1s4

Any ideas?

MacBook Pro

Posted on Jan 22, 2019 1:03 PM

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Answer 1

Top-ranking reply

Loner T

Level 9

59,526 points

Jan 25, 2019 5:32 AM in response to etoracca

To get back to a 'normal' state, run

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.

Reply

Answer 2

etoracca Author

Level 1

8 points

Jan 23, 2019 5:16 AM in response to Loner T

Thanks for your answer.

That's weird because I never intentionally installed beta versions and always upgraded from Apple Store (!), currently I''m on 10.14 Mojave

From what can you tell that I am running a beta ?

Reply

Answer 3

etoracca Author

Level 1

8 points

Jan 24, 2019 12:43 PM in response to etoracca

I upgraded to 10.14.3

This is the output of diskutil list now, it seems unchanged:

Last login: Thu Jan 24 21:27:11 on console
MacBook-Pro-di-Enrico:~ etoracca$ 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         219.7 GB   disk0s2
   3:       Apple_KernelCoreDump                         1.1 GB     disk0s3
   4:       Microsoft Basic Data BOOTCAMP                30.0 GB    disk0s4

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +219.7 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD            202.8 GB   disk1s1
   2:                APFS Volume Preboot                 55.2 MB    disk1s2
   3:                APFS Volume Recovery                517.0 MB   disk1s3
   4:                APFS Volume VM                      1.1 GB     disk1s4

MacBook-Pro-di-Enrico:~ etoracca$