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Question: Why can I not create a Boot Camp disk?

I am trying to run Boot Camp Assistant, but BCA tells me the start up disk is too small. But it isn't...


Thanks,User uploaded file

MacBook Air, macOS High Sierra (10.13.1), 1TB upgrade

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Dec 17, 2017 7:56 PM in response to Loner T In response to Loner T

Thanks Loner T for looking at this. Here is the Terminal output. Here is more detail: I would love to get the windows partition onto my main SSD. But I am running 10.13.3 beta, and all I can do is contact Apple with the Feedback app. So I have hooked up an external HDD with 10.13.2, the partition with the system on it being 90 GB, available 71 GB. Hope you can solve this mystery...

Klauss-MacBook-Air:~ klausblume$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *960.0 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage Klaus Toy 943.2 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Apple_HFS eDrive 15.9 GB disk0s4


/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Klaus Toy +942.8 GB disk1

Logical Volume on disk0s2

398D0E72-9D71-4C64-9C1D-9AAB8212B4C6

Unencrypted


/dev/disk2 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *160.0 GB disk2

1: EFI EFI 209.7 MB disk2s1

2: Apple_HFS MacOS High Sierra 88.5 GB disk2s2

3: Apple_Boot Recovery HD 650.0 MB disk2s3

4: Apple_HFS Blank 70.0 GB disk2s4

5: Apple_Boot Recovery HD 650.0 MB disk2s5


Klauss-MacBook-Air:~ klausblume$ diskutil apfs list

No APFS Containers found

Klauss-MacBook-Air:~ klausblume$

Dec 17, 2017 7:56 PM

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Dec 17, 2017 8:14 PM in response to Klaus Blume In response to Klaus Blume

Reboot from the internal disk, and disconnect the external disk and all other external storage. Are you able to create a FAT32 partition via Disk Utility? If yes, your 2015 Mac supports only EFI Boot, so any W10 EFI Boot installer (including one created by Windows Media Creation Tool) will work. Once booted from the EFI Installer, you can reformat the FAT32 to NTFS (or Free Space) and let the installer continue. Free Space is preferred, so the installer can create the MSR.


Create a backup via TM, in case you need to backup/erase/restore, before you get started.

Dec 17, 2017 8:14 PM

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Question: Why can I not create a Boot Camp disk?