I am trying to install Windows via Boot Camp Assistant and get the following message:
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.
In Disk Utility only one unpartitioned drive is displayed.
In Terminal, the output of
distutil list is:
/dev/disk0 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_HFS Install macOS High S... 90.9 GB disk0s2 3: Apple_HFS bup macpro 364.0 GB disk0s3 4: Apple_HFS Untitled 544.7 GB disk0s4 /dev/disk1 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *4.0 TB disk1 1: EFI EFI 209.7 MB disk1s1 2: Apple_HFS Macintosh HD 4.0 TB disk1s2 3: Apple_Boot Recovery HD 650.0 MB disk1s3 /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *500.1 GB disk2 1: EFI EFI 209.7 MB disk2s1 2: Apple_HFS Crucial 500gb 499.2 GB disk2s2 3: Apple_Boot Recovery HD 650.0 MB disk2s3
Disk0 is used for TM backup. Disk1 is main HD, where Windows is to be installed. After Windows is installed I intend to format and clone disk2 from disk1 and install it in the Mac as the boot drive. I only installed HS and network settings on disk2 to confirm the partitions would be set up.
The question is, how do I merge/delete the partitions on disk1 to satisfy Boot Camp Assistant?