4TB My Book will not reformat for MAC

I purchased a 4TB My Book this afternoon. After connecting it to my iMac I installed the WD software for Mac and then attempted to erase the disk using WD Drive Utilities in order to reformat for Mac. The erase process has got halfway and frozen but the panel warns not to close it as the disk may then be damaged. Is the disk damaged and or is there some way of fixing this?

Hi, if the you are still trying to perform the erase, I would recommend you to turn off the computer, this should close the connection to the drive and unmount the unit safely, you will need to erase it again and format it, but it should be fine.