Mac OS X is a latest version of Mac OS. This operating system provides protected memory and preemptive multitasking, helping to make the system function more reliably and quickly. Now, Mac OS X is a bit more appropriate for network systems like AppleShare, SAMBA etc. Mac OS X uses HFS+ and HFSX file systems. It is possible to format optical disk, thumb drives and hard drives with Mac partitioning structure and file system. So that you can support modern Intel processors, older Mac drives and standard PC compatible volumes, Mac supports three different partition schemes like GPT (GUID partition Table), APM (Apple Partition Map) and MBR (Master Boot Record). GPT scheme is primarily employed by modern Intel processors, APM is utilized by PowerPC based Macs and MBR can be used by Windows compatible PCs. Although, Mac can’t boot from the MBR partitioning scheme, Mac can capable to access MBR partitioning. Mac file system for example HFS, HFS+ and HFSX retain the majority of their data in extent and catalog files. Sometimes, these catalog files get corrupted producing loss of data. In a few cases, the hard drive may get crash leading to data loss. There are numerous Mac hard drive recovery software offered to recover hard drive data even after the Mac hard drive become corrupted or damaged. According to loss of data complexity; you are able to choose reliable data recovery software to retrieve Mac OS X files, that have been lost.
A catalog file behaves like a container and holds information of files and folders stored on the volume. These files and folders are identified by CNID (catalog node ID) in catalog file, that’s assigned during file creation time. Catalog file is maintained by file manager and arranged as B-tree in order that it enables quick and efficient searching. Catalog file contains map node which stores more knowledge about the nodes which might be in use along with the nodes, which are free. Catalog file allows you find any files or folders from your Mac hard drive. Therefore, if the catalog file gets corrupted due to improper system shutdown, power failures, OS crash or a volume header corruption then you can’t be able to access files and folders causing loss of files.
Creating backup is the best solution to avoid lack of the files. In case you have a backup then you can certainly restore lost files from the backup file. In the event you don’t have a backup then you should not worry because Mac hard drive data recovery is applicable software, which helps you to recover hard drive on Mac. This software has two builtin definitive volumes scanning engines, which assists that you retrieve lost files from Mac hard drive. You can even recover lost files from NoteBook, iMac, and iBook and MacBook. The demo tool of this software is available for download on the internet, which gives you an option to preview the recovered data.