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

Question

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

I have a 2015 MacBook Pro 15 inch running the latest Mac OS Mojave update.

I have Windows 10 installed through BOOTCAMP but now I want to delete bootcamp & restore the Macintosh HD.

When I open Bootcamp Assistant it gives me the following error:

"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."

What should I do?

Maybe Loner T can help me out?

MacBook Pro with Retina display, macOS Mojave (10.14.1), MacBook Pro 15 inch 2015

Posted on Nov 8, 2018 2:38 AM

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Answer 1

Loner T

Level 9

59,536 points

Nov 8, 2018 11:32 AM in response to Community User

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 now run BC Assistant and try to Remove/Restore.

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Answer 2

Nov 8, 2018 6:58 AM in response to Loner T

/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 250.0 GB disk0s2

3: Microsoft Basic Data BOOTCAMP 249.6 GB disk0s3

4: Windows Recovery 500.2 MB disk0s4

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +250.0 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 201.8 GB disk1s1

2: APFS Volume Preboot 86.4 MB disk1s2

3: APFS Volume Recovery 1.0 GB disk1s3

4: APFS Volume VM 2.1 GB disk1s4

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Answer 3

Loner T

Level 9

59,536 points

Nov 8, 2018 4:05 AM in response to Community User

From macOS Terminal, post the output of

diskutil list

Most likely, you have a WinRE or OSXRESERVED partition.

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Answer 4

Nov 8, 2018 11:01 AM in response to Loner T

I see WinRecovery on the list?

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Answer 5

Nov 8, 2018 11:41 AM in response to Loner T

Do I have to run them all separately or at the same time?

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Answer 6

Nov 8, 2018 11:50 AM in response to Loner T

THANK YOU IT WORKED!!!!

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Answer 7

Loner T

Level 9

59,536 points

Nov 8, 2018 3:13 PM in response to Community User

Excellent.

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

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