I use a NAS for backups and external storage. At some time in the past week, my backup operations stopped working, and I think I have tracked down the source of the problem. Somehow, an "extension" got added to the disk name (I did not do this and I am not sure how it happened). The disk name (Cosmos) has not changed, but when right click and choose "get info", in the "Name and Extension" section, the disk shows up as Cosmos-1. Unfortunately, the name is greyed out and I can't change it. Does anybody know how I can remove the -1 extension and change the name back to Cosmos so that my backups see the disk again? HELP!