Recover Data after Catalog Record Corruption

Like all OS’s even the Mac OS hard disk can be divided into individual Volumes. Each Volume has four basic items files, directories, file threads and directory threads. These records are defined in the form of catalog file. A catalog file is a Mac system file which is used as a file manager to store information about the hierarchy and directories of files on Mac Volumes

A catalog file is ordered as a B-tree which consists of a header node, leaf node, map node and index node and the allocated block numbers of the files are stored in MDB. Hence catalog records are vital part of a Mac file system. However under some circumstances, the catalog record gets corrupt or damaged due to many reasons including virus infection, software malfunction, file system error, system crash and others. In such situations, you may encounter the following error while accessing the files:

“Message Catalog System: corrupt file”

In case of catalog record corruption, you will not be able to access the files present in that Mac Volume and encounter data loss. You may use a repair application to repair your corrupt catalog file, but such applications can cause more damage and data loss. Apart from catalog record corruption there are many other causes for data loss on Mac. Like accidental deletion of an important file, unintentional format, OS crash, OS up gradation without backing up the important files and many more.

Mac Data Recovery is very much possible after catalog record corruption with the help of a third party recovery software, which can carry out extensive scan of the Mac hard drive and recover all the lost / deleted data from it.

Which recovery software to use?

Yodot Mac Data Recovery is one such amazing recovery application to recover data, which are lost and erased due to any scenario. The application performs rigorous scanning of the Mac Volumes and retrieves all the lost / deleted from it in a very easy and effective way. Furthermore the tool not only recovers data from Mac Volumes but also recovers deleted and lost data from other storage devices like Pen drives, USB, iPods, memory card, portable storage devices and etc.

Step-by-step Procedure

  • Download the application from the website and install it to a new Mac computer and connect your Mac hard drive to it
  • Launch the software and follow the on screen steps
  • The application displays two option in the main screen
  • Choose “Volume Recovery” or “Formatted / Reformatted Recovery” option to recover your Mac data based on the data loss scenario
  • The software scans the whole computer and displays all the logical, physical and external drives connected to the computer
  • Select the Volume from where data is to be recovered and simply click on “Next” button
  • The tool repeats the scanning process and shows all the deleted / lost data from the selected Volume
  • Select the files which you would like to recover and click “Next”
  • You can also preview the recoverable files using “Preview” option
  • Use “Save Recovery Session” option to save the scanned information
  • Finally save the recovered files to your desired location. But not onto the same Volume from where data is being recovered
  • The software also allows you to compress the recovered files to save Mac hard disk space

Precautionary Measures

  • Remove deadly viruses / malwares with the help of a antivirus program
  • Use an UPS device to avoid data loss due to power failure
  • Don’t use any third party software to create or delete a Mac Volume
  • Don’t add any new data or folder to your hard disk after data loss situation
  • Regularly transfer your important data to any external devices