Folders are used in the Mac to collect different files at one place so that they can be easily accessed. It also makes it easy to manage and search the required files as the folders are the location address for particular files. So what will your reaction when you find the folder missing from Mac hard drive. All the files that it contain will also get lost so you must be trying to recover it some how. It can get lost if you have deleted it, while creating and merging the partition, due to some error which has forced you to format the drive. There can be some other unknown reasons but the main quest is for finding the folder missing from Mac hard drive. You can use the backup source to restore the individual content of the folder. The time machine can help you and if the files are not present there then try other drives. But in the last when every option fail you can use the Mac data recovery software which will scan the Mac drive and bring out all the files that were lost. You can see them in the preview window and then you choose the files for recovery. So download the software and get the folder missing from Mac hard drive now.