Here's a handy backup batch script, useful for keeping backups of USB flash drives. It will save the backup files in C:\User\[username]\[backupdir], with backupdir using the same name as the batch file. This makes it easy to have multiple backups from different USB drives, as only the batch file name needs to change to save the backup to a different folder. (This also means that the file MUST be named differently for different drives as to avoid clobbering another backup)