HFS, a common abbreviation for Hierarchical File System, is the file system used in computer systems running the Mac operating system. And the current Mac computers, including iPod, use a newer version of HFS plus (also known as HFS+) to replace the initial one designed HFS.
Sometimes, you may lose your data because the data structures (They are used by HFS file system to store, manage, access and manipulate data) are missing, damaged, or corrupted due to virus infection, system crash, operating system malfunction, improper manipulating, or improper system shutdown. Then HFS file system may be unworkable. Or you accidently delete or format the HFS partition, the HFS file system volume may become inaccessible.
If you don't recover HFS partition as soon as possible, you may rick losing all its data. HFS Recovery is one of the best Mac HFS recovery programs I have tested. It enables you to recover damaged HFS partition and recover deleted files (including photos, videos, audios, documents) from HFS partition. Recovering HFS doesn't damage the Mac's operating system or the hard drive from which the deleted files have been recovered. So feel free to use this HFS recovery software.
Here is a useful tutorial about how to recover deleted or formatted files from HFS partition using "Lost File Recovery" Mode in this software. If you want to recover damaged HFS partition, you can use "Partition Recovery" Mode. The steps are similar.
After launching this HFS Recovery, select "Lost File Recovery" Mode. All the HFS partitions will be listed on the interface. Select the one where your deleted, formatted files located before. You can scan specific file type (photo, video, audio and document) by selecting this type. And then click "Scan".
After a while, all of the recovered files are displayed. This software builds a directory tree of scanned files and folders, for you to find the specific files and folders to be recovered. Click "Recover" to proceed.
Then a window pops up and let you specify a location to save the recovered files. You are never allowed to save them to the volume where you lost your files.