Allocation file is one of the data structures of the HFS+ file system in Mac OS, which keeps record of allocation block details like whether allocation block is in use or it is free etc. One-bit represents each allocation block in Mac that is zero means the block is free and one means the block is in use. Allocation file in HFS+ volume is similar to the Volume Bitwise in HFS. The difference is that it does not require any reserved space at the beginning of the volume and it can be stored as regular file. The size of the allocation block can vary, it is usually in the multiples of disk drive’s block size (Multiples of 512 bytes). From the above-discussed features, you can illustrate allocation file is very significant file in HFS+ file system of Mac OS and any damage to this will cause file system corruption. However, Mac data recovery after allocation file corruption is possible through third party Mac Recovery Software such as “Remo Recover (Mac) Pro Edition”.
There are many scenarios in which the allocation file in Mac can get corrupted. Combination of various sectors creates HFS+ file system volume and then allocation file, so any damage to these sectors may corrupt the allocation file leading to the data loss. As it is mentioned earlier, the allocation file is stored as regular file in the Mac volume, if you accidentally delete allocation file using standard delete function or from command prompt and also emptied the Trash, then you will lose the Mac data. If your Mac file system gets corrupted due to virus attack, then there is a possibility that your allocation file also gets corrupted and become inaccessible. If you have formatted the hard drive to upgrade Mac OS then all data on the volume along with the allocation file will be erased. Allocation file can also get corrupted due to any conflict that may arise because of two or more anti viruses running in the same system. If there is a failure of any system’s hardware components, the file system might get corrupted leading to the corruption of allocation file. Similarly, there are many other reasons for allocation file corruption like improper shut down, power sludge etc. Allocation file corruption cause quite serious problems of data loss so data recovery is required, which can be done using Remo Recover (Mac) pro Edition.
Remo Recover (Mac) pro Edition is one of the strongest application, which will perform absolute recovery of all your lost data after allocation file corruption. This tool provides a simple and user-friendly interface, which does not require any technical skill to run this software. This software also helps to recover data from formatted or inaccessible volume. Data from the HFS+, HFSX, FAT16, and FAT32 volume can be recovered using this application. The demo version of this software is available free. You can download and recover lost data after allocation file corruption. The recovered data can be sorted based on name, size, creation date, and extension. If you are satisfied with the amount of data recovered with the demo version of this software, you can buy the original software to save the recovered data.