|As with [DIR}, Explorer has to be instructed to show all files. |
DIR /? or, alternatively, DIR /help will show all the switches available to that command -- which include options which are not set as default.
However, the $ sign is of some concern -- (although you did not exactly state that the files being copied did NOT have the $ sign, but that the file names being copied TO did -- that was not made clear from your post). What were the properties of the individual files in the original location (Hidden? System? Original location is Fat32? NTFS? -- that too was not specified in your post), and details regarding the nature (format -- FAT32 or NTFS--, hard-drive, flash drive, format, etc.) of this external drive were omitted, even though one might expect this could be relevant.
Are you Administrator? User? Guest? Is this local or a network? Did you copy the files from the folder, or the folder itself? Can you describe a 'typical' file-naming concept used on these files?
Okay, I'll stop with the questions for now... but you get the picture? Information!
Perhaps the easiest would be to boot up to a Live Linux CD.