This is a debugging software specifically designed for Apple's HFS Plus volume format, used to analyse filesystems.
With hfsdebug, you can easily inspect, browse, and analyze various aspects of HFS+ volumes. It also provides you with certain filesystem statistics that can be extremely useful in pinpointing potential issues with your volume.
However, it's important to note that hfsdebug is not meant to be used as a repair tool. It operates in a read-only mode and therefore cannot make any changes to a volume or repair any defects that may be present.
It's also important to bear in mind that hfsdebug only supports the HFS+ volume format. The older HFS format is not supported. However, hfsdebug does support several HFS+ variants including HFS Plus, Journaled HFS Plus, HFS Plus (journaled or otherwise) embedded within an HFS wrapper, and HFSX.
One of the great things about hfsdebug is that it can work with HFS+ volumes regardless of whether they reside on a real, physical disk, or on a "virtual" disk such as a disk image. This makes it incredibly versatile and useful in a range of different situations.
Overall, if you are looking for a reliable and powerful tool to help you explore the internals of HFS+ volumes, hfsdebug is definitely worth checking out. Just remember that it is not designed for repairing volumes, but rather for analyzing them.
Version 4.32: N/A