Purchased a new WD drive on the weekend with the intention of using it as a time machine & general drive. I was able to connect the drive & reformat to Mac HFS with extended journaling. However, when I try to select the create partition option in disk utility the option is greyed out & cannot be selected.
The drive can be used & accessed & even works as a time machine backup, however a partition cannot be created. I have re-formatted a few times & even formated back to windows format & back to mac.
Looking at diskutil it appears that the issue is the drive is stuck as an “FDisk_partition_scheme” not GUID as required for El Capitan to partiion the drive.
Does anyone know how to fix this & change the partition scheme on the drive ?
dev/disk1 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *4.0 TB disk1
1: Apple_HFS External HD 4.0 TB disk1s