Your bootable USB drive could not be created
There is not enough space available on the disk.
This is using a 32 GB USB3 Flash Drive with a Late 2012 iMac 21.5" using Mojave. I'm trying to recreate a Windows partition that was lost.
diskutil list below:
Last login: Sun Mar 17 11:38:34 on console
Johns-iMac-1435:~ nyds$ diskutil list
/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 disk2 1000.0 GB disk0s2
/dev/disk1 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *121.3 GB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_APFS Container disk2 121.1 GB disk1s2
/dev/disk2 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +1.1 TB disk2
Physical Stores disk1s2, disk0s2
1: APFS Volume Macintosh HD 280.7 GB disk2s1
2: APFS Volume Preboot 22.9 MB disk2s2
3: APFS Volume Recovery 513.9 MB disk2s3
4: APFS Volume VM 2.1 GB disk2s4
/dev/disk3 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *30.8 GB disk3
1: DOS_FAT_32 WININSTALL 30.8 GB disk3s1
/dev/disk4 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk4
1: EFI EFI 209.7 MB disk4s1
2: Apple_HFS Samsung_T5 499.8 GB disk4s2
/dev/disk5 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: CCCOMA_X64FRE_EN-US... +5.1 GB disk5
Johns-iMac-1435:~ nyds$