Boot Camp Failing in Re-Partitioning my Drive

[Sankel]

Hi all,

I wanted to re-install Windows10 on my Mac with Boot Camp-assistent. While deleting my previous Boot Camp-partition, it gave me an error that it had problems while doing so.

It tells me that the partition isn't deleted, but I cannot see it anymore in Finder. I have a 3TB Fusion Drive, but the size of my disk is now is now around 2.4TB - Since my partition was around 600GB

Anybody got a solution what to do?

https://imgur.com/a/RwTaqVY

/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                        *3.0 TB     disk1
   1:                        EFI EFI                     209.7 MB   disk1s1
   2:          Apple_CoreStorage Macintosh HD            2.3 TB     disk1s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

/dev/disk2 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *64.1 GB    disk2
   1:               Windows_NTFS NIKON D7100             64.0 GB    disk2s1

/dev/disk3 (internal, virtual):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Macintosh HD           +2.5 TB     disk3
                                 Logical Volume on disk0s2, disk1s2
                                 1A13B661-63A4-4735-A085-2353E3C31327
                                 Unencrypted Fusion Drive

/dev/disk4 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk4
   1:                        EFI EFI                     209.7 MB   disk4s1
   2:                  Apple_HFS Super                   999.9 GB   disk4s2

/dev/disk5 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *16.0 GB    disk5
   1:               Windows_NTFS Naamloos                16.0 GB    disk5s1

(I have a 16GB USB stick, 1TB External HDD and 64GB SD Card)
[doublepost=1535403293][/doublepost]Someone found a way to do this quick and dirty.

• Backup
• Restart with CMD + R
• Go to Terminal
• Type "diskutil cs delete "Macintosh HD""
• When done, go to Disk Util in Recovery mode
• Repair Disk
• Done

I already have everything back upped, question remains; will this work? Can someone verify?

 

[Fishrrman]

If you follow the "quick and dirty" advice above, won't it erase the entire drive?
Do you currently have anything on the Mac partition you need to save?
Or are you ready to "wipe it out" and start over?

My advice:
I'm not a Windows user.
But... if I need to run a Windows app on the Mac OS, I -DO NOT USE- bootcamp.
I use an "emulated solution" instead.
My opinion only.

 

[jaybar]

Years ago I had lots of problems installing Windows via Bootcsmp. I had to remove all my USB devices and start over. I am not saying that is the cause of your issue but am wondering. I like Fishrrman’s idea of virtual machines.

 

[Sankel]

Thanks for replying all

Just for people who got the same problem, here's what I did;

Re-creating a CoreStorage-Volume or Fusion (Drive will be erased)

1. First, back-up everything
2. Restart your Mac with CMD+R
3. Open Terminal
4. Enter this
​

diskutil unmount "Macintosh HD"

5. Then this (check with diskutil cs if the disk# are right)​

diskutil cs createLVG "Macintosh HD" disk0 disk1

6. Enter this to determine the UUID of the new LVG
​

diskutil cs list

7. It would look something like this
​

+--Logical Volume Group A8CEEF12-4568-4561-4866-45CF0CaaBB7C

8. Enter this command to create a new Logical Volume (LV)
​

diskutil coreStorage createVolume <UUID from previous step> jhfs+ "Macintosh HD" 100%

Example
​

diskutil coreStorage createVolume A8CEEF12-4568-4561-4866-45CF0CaaBB7C jhfs+ "Macintosh HD" 100%

9. Close Terminal
10. Open Disk Utility
11. Repair your Fusion Drive
12. Done and reinstall macOs
​

​

[doublepost=1535658603][/doublepost]

My advice:
I'm not a Windows user.
But... if I need to run a Windows app on the Mac OS, I -DO NOT USE- bootcamp.
I use an "emulated solution" instead.
My opinion only.

I use it for playing some games and trying some 3D-work in Windows environment. Both not ideal for emulating.