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Question: Unable to create Bootcamp partition in High Sierra

Late 2015 5k iMac with 2TB Fusion Drive.

I am having the same issue others on this forum are having regarding creating a Bootcamp partition in High Sierra. I have read the post and followed suggestions (Including clean installation) with no success. In the process I think I have created an issue with my partitions as Disk Utility now only shows 1.8TB available. Here is my diskutil list and cs list. Any help would be appreciated!


Last login: Fri Nov 17 11:05:56 on ttys000

iMac:~ nestegard$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage Macintosh HD 121.0 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 315.3 GB disk1s3


/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +1.8 TB disk2

Logical Volume on disk0s2, disk1s2

1379A39E-EFBF-44B5-B5D4-F8DD995D1D88

Unencrypted Fusion Drive


/dev/disk3 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *2.0 TB disk3

1: EFI EFI 209.7 MB disk3s1

2: Apple_HFS Time Machine 2.0 TB disk3s2


iMac:~ nestegard$ diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group D3819888-E41C-4A37-8B35-1411E3DF9FC2

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

Name: Macintosh HD

Status: Online

Size: 1805855301632 B (1.8 TB)

Free Space: 65536 B (65.5 KB)

|

+-< Physical Volume 615B7F13-6E4F-4D8E-BA5E-4CD0F6C54E49

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

| Index: 0

| Disk: disk0s2

| Status: Online

| Size: 120988852224 B (121.0 GB)

|

+-< Physical Volume B8EC0ACA-3ABF-4DBA-A08E-7873C9267E8D

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

| Index: 1

| Disk: disk1s2

| Status: Online

| Size: 1684866449408 B (1.7 TB)

|

+-> Logical Volume Family 4C0821D7-8BF5-49F8-B113-6047102EA03E

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

Encryption Type: None

|

+-> Logical Volume 1379A39E-EFBF-44B5-B5D4-F8DD995D1D88

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

Disk: disk2

Status: Online

Size (Total): 1799999979520 B (1.8 TB)

Revertible: No

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

LVG Type: Fusion, Sparse

iMac:~ nestegard$

IMAC (RETINA 5K, 27-INCH, LATE 2015), macOS High Sierra (10.13.1)

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Nov 17, 2017 1:02 PM in response to Loner T In response to Loner T

Yes, I do have a time machine backup. When I was comparing mine with others on the forum I noticed a few anomalies (like, what is disk 2). I have already done a couple of restores from Time Machine, not sure if that has caused any issues.

Nov 17, 2017 1:02 PM

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Nov 17, 2017 1:34 PM in response to zipper70 In response to zipper70

Yes. Run


diskutil eraseDisk jhfs+ SSD diskSSD

diskutil eraseDisk jhfs+ HDD diskHDD

diskutil cs create macOS-LVG diskSSDs2 diskHDDs2

diskutil cs createVolume <TheLongStringFromPreviousCommand> jhfs+ "Macintosh HD" 100%


You need to find out the values of SSD and HDD using diskutil list command and substitute the numbers as appropriate.


Now you can restore the TM backup.

Nov 17, 2017 1:34 PM

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Nov 17, 2017 3:01 PM in response to zipper70 In response to zipper70

I found a stray partition in Internet Recovery through disk utility and deleted it. However, disk utility still shows my HDD capacity as 1.81TB (Used to be 2TB). I have been unsuccessful to get anything accomplished through the terminal on any of the disk #'s.

See error on second picture:


User uploaded file

User uploaded file

Nov 17, 2017 3:01 PM

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User profile for user: zipper70

Question: Unable to create Bootcamp partition in High Sierra