How to Resolve FAT Errors?

Although FAT (File Allocation Table) is a quite efficient file system, but due to the method it uses to allocate disk space and to chain the files, there can be several errors that can occur while its usage. The logical structure of FAT formatted disk might get corrupt and result into inaccessible files, folders and partitions. Windows error checking utility, CHKDSK, can detect and fix most of these errors by analyzing the disk for integrity concerns. So, it is highly recommended to scan your disk on routine basis. However, programs like data recovery software are used when there is no alternative to access the stored data.

Symptoms

While corruption, a FAT formatted disk exhibits abrupt behavior and shows symptoms like:

• Disk shows that one or more of its partitions are not formatted. This typically occurs when the partition table is corrupted.

• Clusters of two different files point to a single cluster. Such files are referred as cross-linked files.

• System fails to link to the file, though the clusters are marked as being in use in FAT. Such clusters are denoted to be lost.

• Corruption or invalid values in FAT entries

• Invalid files or directories due to corruption of their internal structure

Cause

Among other reasons causing FAT corruption, unexpected power outage is the most frequently occurring. Some other typical causes for FAT errors are:

• Resource conflicts

• Bad system drivers

• Operating system or program crashes. While such situations, there can be few clusters, for which the space has been allocated but never assigned to a file

• Improper system shutdown cause corruption of files being closed improperly

Solution

The possible way outs of such errors are:

• CHKDSK automatically checks for disk errors, if any, when you start the system. The system restarts after the repair process, if the affected drive partition is boot partition. If boot time CHKDSK cannot accomplish the desired task, run the tool manually with suitable switches.

• If applying the above measure fails, reformat the disk and restore from backup. Use data recovery tools if no valid backup is available. You can also use these data recovery software directly for a corrupted file system. Such tools are fully competent to offer partition Recovery while maintaining data integrity and giving interactive user interface.