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

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rilly2000 Author

Level 1

12 points

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

Hi all, I'm trying to remove the partition of my Windows bootcamp but i keep getting "The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows." error. I am on MacOs High Seirra Version 10.13.3 beta and when i ran diskutil list on terminal, i get this:

/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_KernelCoreDump 655.4 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 50.0 GB disk0s4

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +200.0 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 106.4 GB disk1s1

2: APFS Volume Preboot 20.2 MB disk1s2

3: APFS Volume Recovery 518.2 MB disk1s3

4: APFS Volume VM 1.1 GB disk1s4

Posted on Mar 9, 2018 3:16 PM

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Answer 1

rilly2000 Author

Level 1

12 points

Mar 9, 2018 7:58 PM in response to Loner T

I think there is a whole lot more problem now, while still in internet recovery mode, I ran diskutil list to see which disk is disk0, but I noticed the BOOTCAMP disk has disappeared and the space is missing.

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Answer 2

Loner T

Level 9

59,526 points

Mar 10, 2018 12:13 AM in response to rilly2000

In Internet Recovery, click on Utilities -> Terminal, and run

diskutil eraseDisk jhfs+ FormatIT disk0

and quit Terminal, and restore from TM backup.

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Answer 3

Loner T

Level 9

59,526 points

Mar 9, 2018 3:48 PM in response to rilly2000

Your current macOS version creates the extra partition called Kernel Core dump. Your BC partition is on the other side. Do you have a TM backup?

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Answer 4

rilly2000 Author

Level 1

12 points

Mar 9, 2018 4:07 PM in response to Loner T

Yea, i do have a TM backup, but unfortunately, it is from September 2017 and can't go back that far.

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Answer 5

Loner T

Level 9

59,526 points

Mar 9, 2018 4:27 PM in response to rilly2000

Can you create one now? Also copy important files separately to a second drive, if possible.

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Answer 6

rilly2000 Author

Level 1

12 points

Mar 9, 2018 4:56 PM in response to Loner T

okay, just did

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Answer 7

Loner T

Level 9

59,526 points

Mar 9, 2018 5:13 PM in response to rilly2000

Can you boot into Internet Recovery, erase the whole internal disk and restore from the latest TM backup?

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Answer 8

rilly2000 Author

Level 1

12 points

Mar 9, 2018 5:17 PM in response to Loner T

Oh whoa, thats a bit risky, What about if i un-enroll my device and wait till apple release the next non-beta macOs update?, I am not really in an hurry to recover the memory.

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Answer 9

Loner T

Level 9

59,526 points

Mar 9, 2018 5:38 PM in response to rilly2000

This will not remove the Apple Kernel Core dump volume. You will have this issue. This is the reason why Apple warns about not using Beta OSes on 'production' machines.