


This process is Data Destructive and cannot be undone. Both processes are normally done together.Ĭritical: The instructions in the article below are designed to help repartition and format a hard drive.

Formatting, however, deletes the content of a volume to clean it, and assigns a file system to it so that data can be moved into and out of the volume. Partitioning a hard drive means preparing it to be used by the Operating System (OS), creating a Volume for the OS to use. How to partition and format a drive from Windows File Explorer For instructions to convert a drive to (APFS) Apple File System Format on macOS High Sierra (10.13), please refer to Answer ID 9968: How to Convert a WD External Drive to Apple File System (APFS) Format.If the following message occurs during the format procedure, please refer to Answer ID 20270: macOS Disk Utility Error "MediaKit reports not enough space on device for requested operation".APFS formatted volumes can be read by a macOS High Sierra (10.13), but not by a macOS Sierra (10.12) or earlier.įor more information, please refer to Apple KBA ID HT208018 - Prepare for APFS in macOS High Sierra.Please see Answer ID 18670: When formatting or partitioning a drive, an error occurs stating the drive cannot be dismounted or unmounted for additional information on this particular issue. If at any time an error occurs stating that the drive can not be dismounted or unmounted, this is not caused by an issue with the hard drive.If this is the first time connecting an external device to a macOS, refer to the section titled Operating System Compatibility for help formatting the drive.Please contact Microsoft or Apple for more support. The partition table is used to display each partition within the Operating System and if this becomes corrupted it will lead to data loss. Western Digital does not recommend multiple partitions due to potential corruption of the Partition table.Western Digital recommends that when formatting a drive that it be the only drive present on the system to limit occurences of accidental data loss. Once the process begins, ALL THE DATA ON THE DRIVE WILL BE LOST! The instructions in the article below are designed to help repartition and format a hard drive. The instructions do not differ when formatting different capacity sizes, this is not capacity specific.

