I have one concern related to this. If you store file pathes to removable drives in a workspace, it could be troublesome in restore since in many cases they are assumed not to exist.
So you should ignore when you miss a file in restoring workspace and the file was on the removable drive.
And it may be better to store the path to files in relative path from EmEditor only where the files are placed in the same removable drive in which EmEditor lies.
Or anyway it might be better to ignore when files are missed in restoring workspaces. Most of users may think the notification just as bothersome.
Is my concern off the topic here ?