How to Recover Lost Partition on Mac

Have you lost important partition on your Mac system?

Managing kinds of files on Mac system hard drive by creating partitions is very facilitating and it improves data accessibility on Mac.  User needs to create logical partition of hard drive for saving system files, movies, songs, documents and other type files separately in different volumes. Hence, it allows users to perform risk free file operations as operating system program files are saved on a separate volume. However, saving files on partitions can be worthless as in several scenarios you may lose precious data after the partition is lost. Whenever you run into this stage, instantly launch an effective plan to recover missing partition.

While working on Mac system, user may encounter several factors, which lead to hard drive partition loss. Oftentimes, you may end with missing hard disk partitions due to corrupted Apple Partition Map. This APM contains necessary information about hard drive volumes on Mac computer. If APM is corrupted because of any reason, these partitions will become missing. In such stage, third party software plays important role to help users in restoring data. Sometimes, users need to recreate hard drive partition from existing one for various purposes like installing other OS, saving specific files etc. If any interruption or error takes place during re-partitioning operation, it may result in loss of particular HDD volume. Mac user can get more details on to know about Mac OS X volume recovery.

On Mac OS X system, file system keeps record of all files and related information saved on existing hard drive volumes. In any case, if the file system is damaged or corrupted, hard drive volumes may become inaccessible. Users may receive error like, “-127 fsDSIntErr internal file system error”. Generally, this error occurs if the Mac volume fails to mount or it is lost. Similarly, hard drive partition may be lost after improper resizing operation. When expanding or shrinking volume size with the Disk Utility if the process gets interrupted or Disk Utility failure happens, user may be left with lost or missing partition. Additionally, partition may be lost after the journal, partition table and catalog files are corrupted on Mac computer. However, it is possible to restore corrupted partition with third party software.

If you are not comfort with partition recovery operation or do not have complete information about how to recover lost partition on Mac OS X machines, make use of an advanced Partition Recovery Program. It is an easy to use application that automatically scans entire hard drive to restore lost, missing, formatted, unmountable or corrupted partition on iMac, MacBook Air, MacBook Pro, Mac Mini and other devices.  It supports retrieval of videos, documents, photos, application files, songs and other kinds of files from hard drive after the partition is lost or deleted on Mac computer. Visit at and know how to retrieve NTFS partition with this software.

Note: Even, if you lose data after corruption of hard disk partition, then take help from this link:

Steps to use this software:

Step-1: Install the trial version of this app and launch it to get main screen. Select “Recover Partition / Drive” from the main screen. Then select “Volume Recovery” from the next window.

How to Recover Lost Partition on Mac - Main Screen

Figure 1: Main Screen

Step-2: In next step, you will see all logical volumes detected by the software. Select the particular volume to recover and click on "Next" tab.

Lost Partition Recovery on Mac - Select Volume

Fig B: Select Volume

Step-3: After the scanning process is completed, you can view all recovered files from lost partition along with their original folder hierarchy.

Restore Lost Partition on Mac - Recovered Data

Figure 3: Recovered Data

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