I removed the drive from the UPS and connected dirctly to the outlet I have used before to take the UPS out of the equation.
Result - Still getting Disk Not Ejected Properly errors.
So I went back and did another First Aid on the drive.
It came back with the following Error report.
Repairing file system.
Volume was successfully unmounted.
Performing fsck_hfs -fy -x /dev/rdisk3s3
Checking Journaled HFS Plus volume.
Checking extents overflow file.
Checking catalog file.
Checking multi-linked files.
Checking catalog hierarchy.
Checking extended attributes file.
The volume G-Drive Time Machine could not be verified completely.
File system check exit code is 8.
Restoring the original state found as mounted.
Problem -69842 occurred while restoring the original mount state.
File system verify or repair failed.
Operation failed…
The drive has gotten corrupted due to the improper disconnections.
First thing to check is your System Preferences > Energy Saver. Make sure the “put hard disks to sleep when possible” is unchecked. Also disable sleep mode on your computer entirely.
See if that still drops the connection. If it does then its possible there is a bad cable, or interface port on the drive. In that case we would recommend a replacement if under warranty. You can generate an RMA to get a replacement on our site at any time here: RMA creation
