Hi. I needed to put the 3TB drive from my MyBookEssential in a raid enclosure and wanted to use the 1TB WD Caviar Green I swapped out as a replacement in the MyBookEssential case. I can now not format the drive in Disk Utility (“Unable to write to last block of device” error) I have tried to use both the “Erase” and “Partition” function with the partition map set to GUID or Apple partition Map - no luck either way. If I try a secure erase it fails saying “Erase failed with error:” no other information. The drive does show up as 1TB capacity and I could format the drive without problems in a different external USB enclosure so I know the HD is fine. I have seen someone suggest that I should secure erase the drive first which I have done, still same results when putting it back inthe WD enclosure. I have updated the WD firmware and have installed the TURBO drivers from the WD site. I tried to use WD Quick Formatter but when I get to where it should show the drive I need to format the dropdown menu just has “item 1, Item 2, Item 3”. The Format Drive button is grayed out and stays that way no matter which “item” I select from the dropdown.
I am at the verge of just chucking the WD enclosure alltogether as I have now spent hours dong this without getting anywhere . . . Any suggestions would be appreciated. Thanks : )