I’ve been trying to setup what, I think, the My Cloud EX2 calls NAS to USB backup. When USB devices are attached it seems like the EX2 automatically creates a share using a rather obscure name. However, it also looks like the button that would be used for removing such a share is always inactive (i.e., cannot be selected).
On my first attempt at setting up this kind of backup I formatted the USB drive for use of NTFS. It seems that this has the affect of allowing a backup job to run successfully only one time. Attempting to rerun that job fails with an error indicating that the device is in READ-ONLY mode. Therefore, I finally got around to trying a device formatted as EXT for these backups. A limited amount of experimentation indicates that this setup is at least able to rerun the backup job.
Therefore, it looks like I need to reformat the device I purchased with enough capacity for backup purposes to EXT which means that the NTFS share will never be able to be used again and there is no need for the share to be defined. While I suppose that this should not affect the functioning of new shares the idea of showing a bunch of unusable shares is pretty ugly and keeping track of them creates unwanted confusion.
How can USB shares be removed?