Very simple fix to the E-200.

Try plugging the Drive into a Windows 8.1 PC through USB.

You'll need a USB to SATA connector from an external HDD Kit available everywhere.

A message will show up saying the drive has errors on it.

Wait a moment then go to File Explorer. It will show up as 5 different drives.

Mouse over each of the 5 partitions, right click and click repair on all 5 partitions.

Windows should repair them.

This has worked on all drives I have worked on with the E-200.

Plug it back in to the Xbox and you're done.

Hope this helps, it's worked 100% of the time for us.

Kevin @ kcxboxrepair.com