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

hi loner t. I tried to run some of the commands you suggested, but it didn't fully work. I am now stuck at the following stage:

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 1.0 TB disk0

1: EFI EFI 314.6 MB
disk0s1

2: Apple_APFS Container disk1 878.0 GB
disk0s2

3: Apple_APFS Container disk2 121.2 GB
disk0s3

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +878.0 GB
disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 336.9 GB
disk1s1

2: APFS Volume Preboot 23.2 MB disk1s2

3: APFS Volume Recovery 517.8 MB
disk1s3

4: APFS Volume VM 1.1 GB disk1s4

/dev/disk2 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +121.2 GB
disk2

Physical Store disk0s3

1: APFS Volume bc1 987.1 KB
disk2s1

Could you please tell me how to merge those two disks back together so I can do a clean Bootcamp install?

Your help is much appreciated.

Hi and thanks for your quick reply. Please see below:

APFS Containers (2 found)

|

+-- Container disk1 DE26BA8B-9E82-45E2-BB7F-E55CCF1B756E

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

|
APFS Container Reference: disk1

|
Size (Capacity Ceiling): 878007263232 B (878.0 GB)

|
Minimum Size: 349637971968 B (349.6 GB)

|
Capacity In Use By Volumes:
338747011072 B (338.7 GB) (38.6% used)

|
Capacity Not Allocated: 539260252160 B (539.3 GB) (61.4% free)

|
|

|
+-< Physical Store disk0s2 6D31B57E-FAF0-4155-934C-22EAF42F9173

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

|
|
APFS Physical Store Disk:
disk0s2

|
|
Size: 878007263232 B (878.0 GB)

|
|

|
+-> Volume disk1s1 5A14A919-FE8E-3830-91F1-CD5B2A772FA0

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

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

|
|
Name: Macintosh HD (Case-insensitive)

|
|
Mount Point: /

|
|
Capacity Consumed: 336935841792 B (336.9 GB)

|
|
FileVault: Yes (Unlocked)

|
|

|
+-> Volume disk1s2 F6FF13C2-025A-4CF9-8409-809EBA7B87AB

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

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

|
|
Name: Preboot (Case-insensitive)

|
|
Mount Point: Not Mounted

|
|
Capacity Consumed: 23199744 B (23.2 MB)

|
|
FileVault: No

|
|

|
+-> Volume disk1s3 BFC29C93-5A04-4384-977F-C0FCF2B5280E

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

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

|
|
Name: Recovery (Case-insensitive)

|
|
Mount Point: Not Mounted

|
|
Capacity Consumed: 517750784 B (517.8 MB)

|
|
FileVault: No

|
|

|
+-> Volume disk1s4 793505FA-2E0F-41CC-81D4-F49D0AB9A6F0

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

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

| Name: VM (Case-insensitive)

| Mount Point: /private/var/vm

| Capacity Consumed: 1073762304 B (1.1 GB)

| FileVault: No

|

+-- Container disk2 9B028BE4-C881-4A57-9543-AAB36C73BF50

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

APFS Container Reference: disk2

Size (Capacity Ceiling): 121198018560 B (121.2 GB)

Minimum Size: 371597312 B (371.6 MB)

Capacity In Use By Volumes:
127344640 B (127.3 MB) (0.1% used)

Capacity Not Allocated: 121070673920 B (121.1 GB) (99.9% free)

|

+-< Physical Store disk0s3 7D89C4A5-4DCF-4142-81C0-92D4DC241012

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

|
APFS Physical Store Disk:
disk0s3

|
Size: 121198018560 B (121.2 GB)

|

+-> Volume disk2s1 0725DA92-3644-3936-82A2-048C2E7C37EB

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

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

Name: bc1 (Case-insensitive)

Mount Point: /Volumes/bc1

Capacity Consumed: 987136 B (987.1 KB)

FileVault: No

You're amazing, that worked. Thank you so much.

Out of curiosity - where can I find out more about this? For instance, why did neither diskutil list nor diskutil apfs list show any reference to there being a 'fat32' formatted BOOTCAMP disk from what I can see, but instead showed APFS?

What made you want to run diskutil apfs list in the first place and why did you delete in the order Volume-Container-Volume.

Sorry, I don't expect a full answer, but I am curious to learn more about this.

Thanks for your help again!

Hey I have the same problem as everyone else I got this:

Last login: Sun Apr 22 07:42:23 on console

Yanns-MacBook-Pro:~ yannkull$ diskutil erasevolume fat32 bootcamp disk0s4

bootcamp does not appear to be a valid volume name for its file system

Yanns-MacBook-Pro:~ yannkull$ diskutil list

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 251.0 GB
disk0

1: EFI EFI 314.6 MB
disk0s1

2: Apple_APFS Container disk1 174.0 GB
disk0s2

3: Microsoft Basic Data BOOTCAMP 76.2 GB disk0s3

4: Windows Recovery 513.8 MB
disk0s4

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +174.0 GB
disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 155.1 GB
disk1s1

2: APFS Volume Preboot 19.9 MB disk1s2

3: APFS Volume Recovery 517.8 MB
disk1s3

4: APFS Volume VM 1.1 GB disk1s4

Yanns-MacBook-Pro:~ yannkull$

Yanns-MacBook-Pro:~ yannkull$ diskutil cs list

No CoreStorage logical volume groups found

Hello.

I finished the erase disk04 and disk05 steps, but could not merge them.

diskutil list

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_APFS Container disk1 702.0 GB disk0s2

3: Microsoft Basic Data BOOTCAMP 297.3 GB disk0s3

4: Microsoft Basic Data Untitled 471.9 MB disk0s4

5: Microsoft Basic Data Untitled 512.8 MB
disk0s5

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +702.0 GB
disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 527.6 GB disk1s1

2: APFS Volume Preboot 22.0 MB disk1s2

3: APFS Volume Recovery 517.8 MB
disk1s3

4: APFS Volume VM 1.1 GB disk1s4

Please help me.

How should I do now?

Thanks.

I have finished the steps.

"diskutil eraseVolume jhfs+ BC1 disk0s3

diskutil eraseVolume jhfs+ BC2 disk0s4

diskutil eraseVolume jhfs+ BC3 disk0s5

diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s5"

Now the diskutil list looks like follow:

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB
disk0s1

2: Apple_APFS Container disk1 702.0 GB
disk0s2

3: Apple_HFS BC1 298.2 GB
disk0s3

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +702.0 GB disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 528.4 GB
disk1s1

2: APFS Volume Preboot 22.0 MB disk1s2

3: APFS Volume Recovery 517.8 MB
disk1s3

4: APFS Volume VM 2.1 GB disk1s4

The Boot Camp Assistant shows an error message:

"The startup disk does not have enough space to be partitioned.

You must have at least 40 GB of free space available."

What should I do now???

Please help me.

Thank you.

Hi LT,

I did the steps but still have the same error message in BC Assist: "The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows."

diskutil list =

/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 249.7 GB
disk0s2

3: Microsoft Basic Data BOOTCAMP 249.5 GB
disk0s3

4: Apple_HFS UntitledHFS 893.4 MB
disk0s4

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +249.7 GB
disk1

Physical Store disk0s2

1: APFS Volume Macintosh HD 230.3 GB
disk1s1

2: APFS Volume Preboot 21.9 MB disk1s2

3: APFS Volume Recovery 517.8 MB
disk1s3

4: APFS Volume VM 1.1 GB disk1s4

What am I missing?

I had the below error:

diskutil mergePartitions jhfs+ BCMP disk0s3 disk0s4

The chosen disk does not support resizing.

Do you wish to format instead? (y/N) y

Merging partitions into a new partition

Start partition: disk0s3 BOOTCAMP

Finish partition: disk0s4 UntitledHFS

Merging partitions encountered error "Operation not permitted (1)".

The erase will not occur.

What does it mean?

Hi,

can anyone let me know how should I proceed?

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_APFS Container disk1 407.0 GB disk0s2

3: Microsoft Basic Data BOOTCAMP 92.6 GB disk0s3

4: Windows Recovery 498.1 MB disk0s4

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +407.0 GB disk1

Physical Store disk0s2

1: APFS Volume Home 359.2 GB disk1s1

2: APFS Volume Preboot 22.6 MB disk1s2

3: APFS Volume Recovery 517.8 MB disk1s3

4: APFS Volume VM 1.1 GB disk1s4

Could you help me please I have been trying to recover my partition back to normal but I can't T.T

I want to recover the partitions to only one partition for my macbook

Les-MacBook-Pro:~ levantuanlong$ 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 100.7 GB disk0s3

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +150.0 GB disk1

Physical Store disk0s2

1: APFS Volume Sans titre 71.7 GB disk1s1

2: APFS Volume Preboot 45.1 MB disk1s2

3: APFS Volume Recovery 1.0 GB disk1s3

4: APFS Volume VM 1.1 GB disk1s4

Loner T,

I want to first say that I am in awe on how helpful you are with everyone on this thread! Its so cool to see how helpful people are in the Apple community.

I think I have a similar issue here but I want to make sure... I had a Bootcamp partition but then something happened on the Windows side that stopped working, so I ended up removing it entirely. When I went to reinstall Bootcamp/Windows again, an error came up when installing Windows, and I never got it fully installed. Somewhere along the line, Bootcamp partitioned my Fusion Drive on my 27inch 2017 iMac, and I am no longer able to make the computer recognize 1 hard drive. I took a couple screenshots so hopefully its clear on what I am experiencing. Also, when I go back to Bootcamp Assistant, it no longer gives me the error "The startup disk cannot be partitioned or restored to a single partition", it goes straight to the "Install Windows" / select ISO screen of the process.

I also ran the diskutil list + diskutil cs list in terminal and pasted the results below.

Thank you in advance for your help!

Last login: Wed May 30 17:53:13 on console

Admins-iMac:~ kris$ diskutil list

/dev/disk0 (internal):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 121.3 GB disk0

1: EFI EFI 314.6 MB disk0s1

2: Apple_CoreStorage Macintosh HD 120.9 GB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

/dev/disk1 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *2.0 TB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage Macintosh HD 1.7 TB disk1s2

3: Apple_Boot Recovery HD 650.0 MB disk1s3

4: EFI NO NAME 104.9 MB disk1s4

5: EFI NO NAME 104.9 MB disk1s5

6: Apple_HFS BOOTCAMP 258.9 GB disk1s6

7: Apple_Boot 650.0 MB disk1s7

/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +1.8 TB disk2

Logical Volume on disk0s2, disk1s2

F688A158-319F-446D-B17E-0B4D2B6CABB5

Unencrypted Fusion Drive

/dev/disk3 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_partition_scheme *3.0 TB disk3

1: Apple_partition_map 262.1 KB disk3s1

2: Apple_HFS 3TB 3.0 TB disk3s3

diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 0F34B518-B384-480A-8603-F77D4074DFBF

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

Name: Macintosh HD

Status: Online

Size: 1852856283136 B (1.9 TB)

Free Space: 69632 B (69.6 KB)

|

+-< Physical Volume EA3333AA-351D-4308-8DA2-321217DD62F5

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 120883990528 B (120.9 GB)

|

+-< Physical Volume BBAFFB0F-79A2-4066-B10B-B620FCDC9C75

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

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 1731972292608 B (1.7 TB)

|

+-> Logical Volume Family 853B6CFE-A0B3-48D1-BE87-65E132D23014

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

Encryption Type: None

|

+-> Logical Volume F688A158-319F-446D-B17E-0B4D2B6CABB5

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

Disk: disk2

Status: Online

Size (Total): 1847001481216 B (1.8 TB)

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse

AMAZING! You are absolutely a hero! I can now cancel my Genius Bar Appointment, you saved me a trip!

Just wondering, how did you learn all this stuff? Like if I wanted to be knowledgeable, are there university courses that set the track for this?

If you have a test Mac that you are willing to wipe and re-install, it is the easiest method of teaching yourself this stuff. Apple also offers courses, which I highly recommend (despite never having taken one myself - https://training.apple.com/us/en/courses).

Also being the Home IT Tech support person for gadgets and computers, it is also a bit of fun to play with this stuff. I did Storage and SysAdmin work in the 80s/90s and learned some of this stuff. ASC will also help you learn new things. Lots of avenues, if you have an interest. Peer training/learning/mentoring is very useful. 😉

Wow thanks for that link, I have added that to my list.

I'm running into another issue when trying to run Bootcamp. It seems the computer is having an issue portioning the hard drive as it stalls during the portioning disk progress bar, and then an error appears:

So, I run the First Aid in Disk Utility and everything checks out fine. I look up the error and find another post of yours that mentions to try and "manually" add the partition using Disk Utility, making sure to use FAT32. I couldn't because of this error:

Not sure what to do at this point. I ran the follow per your post (Bootcamp Cannot Partition Disk):

diskutil repairDisk disk0

Repairing the partition map might erase disk0s1, proceed? (y/N) y

Started partition map repair on disk0

Checking prerequisites

Checking the partition list

Adjusting partition map to fit whole disk as required

Checking for an EFI system partition

Checking the EFI system partition's size

Checking the EFI system partition's file system

Checking the EFI system partition's folder content

Checking all HFS data partition loader spaces

Checking booter partitions

Checking booter partition disk0s3

Verifying file system

Volume is already unmounted

Performing fsck_hfs -fn -x /dev/rdisk0s3

Checking Journaled HFS Plus volume

Checking extents overflow file

Checking catalog file

Checking multi-linked files

Checking catalog hierarchy

Checking extended attributes file

Checking volume bitmap

Checking volume information

The volume Boot OS X appears to be OK

File system check exit code is 0

Restoring the original state found as unmounted

Reviewing boot support loaders

Checking Core Storage Physical Volume partitions

Verifying storage system

Performing fsck_cs -n -x --lv --uuid 0F34B518-B384-480A-8603-F77D4074DFBF

Checking volume

disk1s2: Scan for Volume Headers

disk0s2: Scan for Volume Headers

disk1s2: Scan for Disk Labels

disk0s2: Scan for Disk Labels

Logical Volume Group 0F34B518-B384-480A-8603-F77D4074DFBF spans 2 devices

disk0s2+disk1s2: Scan for Metadata Volume

Logical Volume Group has a 66 MB Metadata Volume with double redundancy

Start scanning metadata for a valid checkpoint

Load and verify Segment Headers

Load and verify Checkpoint Payload

Load and verify Transaction Segment

Load and verify Transaction Segment

Load and verify Transaction Segment

Load and verify Transaction Segment

Load and verify Transaction Segment

Incorporate 4 newer non-checkpoint transactions

Load and verify Virtual Address Table

Load and verify Segment Usage Table

Load and verify Metadata Superblock

Load and verify Logical Volumes B-Trees

Logical Volume Group contains 1 Logical Volume

Load and verify E23859DD-F40F-485B-878A-4D0C31084FEB

Load and verify FB7B9C03-3203-43DA-A86A-6D8CF4CB7017

Load and verify Freespace Summary

Load and verify Block Accounting

Load and verify Live Virtual Addresses

Newest transaction commit checkpoint is valid

Load and verify Segment Cleaning

The volume 0F34B518-B384-480A-8603-F77D4074DFBF appears to be OK

Storage system check exit code is 0

Repairing storage system

Performing fsck_cs -y -x --lv --uuid 0F34B518-B384-480A-8603-F77D4074DFBF

The volume disk1s2+disk0s2 cannot be repaired when it is in use

Checking volume

disk1s2: Scan for Volume Headers

disk0s2: Scan for Volume Headers

disk1s2: Scan for Disk Labels

disk0s2: Scan for Disk Labels

Logical Volume Group 0F34B518-B384-480A-8603-F77D4074DFBF spans 2 devices

disk0s2+disk1s2: Scan for Metadata Volume

Logical Volume Group has a 66 MB Metadata Volume with double redundancy

Start scanning metadata for a valid checkpoint

Load and verify Segment Headers

Load and verify Checkpoint Payload

Load and verify Transaction Segment

Load and verify Transaction Segment

Load and verify Transaction Segment

Load and verify Transaction Segment

Load and verify Transaction Segment

Incorporate 4 newer non-checkpoint transactions

Load and verify Virtual Address Table

Load and verify Segment Usage Table

Load and verify Metadata Superblock

Load and verify Logical Volumes B-Trees

Logical Volume Group contains 1 Logical Volume

Load and verify E23859DD-F40F-485B-878A-4D0C31084FEB

Load and verify FB7B9C03-3203-43DA-A86A-6D8CF4CB7017

Load and verify Freespace Summary

Load and verify Block Accounting

Load and verify Live Virtual Addresses

Newest transaction commit checkpoint is valid

Load and verify Segment Cleaning

The volume 0F34B518-B384-480A-8603-F77D4074DFBF appears to be OK

Storage system check exit code is 0

Incorrect size for volume "Macintosh HD"

Adjusting volume "Macintosh HD"

Growing Logical Volume

Resizing Core Storage Logical Volume structures

Resized Core Storage Logical Volume to 2,114,568,323,072 bytes

Growing file system

The partition map appears to be OK

Finished partition map repair on disk0

Here is the output:

diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 0F34B518-B384-480A-8603-F77D4074DFBF

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

Name: Macintosh HD

Status: Online

Size: 1860855447552 B (1.9 TB)

Free Space: 303104 B (303.1 KB)

|

+-< Physical Volume EA3333AA-351D-4308-8DA2-321217DD62F5

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 120883990528 B (120.9 GB)

|

+-< Physical Volume BBAFFB0F-79A2-4066-B10B-B620FCDC9C75

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

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 1739971457024 B (1.7 TB)

|

+-> Logical Volume Family E23859DD-F40F-485B-878A-4D0C31084FEB

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

Encryption Type: None

|

+-> Logical Volume FB7B9C03-3203-43DA-A86A-6D8CF4CB7017

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

Disk: disk2

Status: Online

Size (Total): 1855000412160 B (1.9 TB)

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse