If this fails, you should attempt to mont a healthy macOS state via the Time Machine utility. In this case, you should be able to fix the issue by initiating a repair disk operation via the Recovery Menu.

Corrupted OS files – Under certain circumstances, you can expect to see this issue occurring in situations where you’re actually dealing with some type of system file corruption that is affecting the reformatting operation.

In this case, you need to flip the Locked/Unlocked switch in order to fix the issue.

SD Card uses is ‘Locked’ – Keep in mind that if you’re using an older SD card (especially from SanDisk) when encountering this issue, it’s possible that the operation fails because the external device is locked, so new info cannot be written on it.

If you find yourself in this particular scenario, you should be able to fix the issue by creating a new equivalent via Disk utility or directly via the Terminal app.

Missing / Corrupted Partition map – One of the most common scenarios that might cause this problem is an instance in which the required partition map is either missing or severely corrupted.

Data Recovery may be possible using a WD Data Recovery Partner. For more information, please refer to Answer ID 29231: My Cloud Home: Family Folder Not Available after System EraseĪ My Cloud Home that has been 'System Erased' must be setup again at M圜/hello with your M圜 account.

My Cloud Home Family Folder Not Available after a System Erase.

The process DOES NOT delete the M圜 Account.

The process can take up to 30 minutes depending on device configuration and content.

Sends an confirmation email to the device owner of the System Erase action.

Informs the My Cloud Home servers that a System Erase has been performed.

Resets the unit back to factory default.

Delete all configured Services added by all users of the device.

Failure to have the unit connected to the internet and in communication with My Cloud Home servers will result in a failed System Erase process.

This process cannot be undone and requires the My Cloud Home to be connected to the internet and be able to communicate to the My Cloud Home servers. Performing a 'System Erase' on a My Cloud Home or Duo is 'Data Destructive'.

The My Cloud Home and My Cloud Home Duo can be restored to factory settings in the My Cloud Home Web and Mobile app using the System Erase function. This article explains how to 'System Erase' a My Cloud Home to factory settings.*END

Erase process has failed