FSEvents Errors Indicate File System Corruption and Data Loss in Mac OS X

Mac OS X uses a number of file systems including HFS, HFS+, HFSX and HFS Wrapper. In some situations where file system issues take place, you may find out some entries in the system log that indicates some error message or other problems. Such log entries signify few ‘fseventsd and synchronization problems with the file system. Solving this problem needs hard drive formatting. In such cases, if you do not have complete or updated backup, Mac Data Recovery is required to retrieve lost, missing or inaccessible data.

For instance, when you find your Mac OS X system log, you might find following entries in it:

Apr 7 21:01:03 fseventsd39: event logs in /Volumes/250GB Drive/.fseventsd out of sync with volume. destroying old logs. (346 0 4864943)

Apr 7 21:01:03 fseventsd39: log dir: /Volumes/250GB Drive/.fseventsd getting new uuid: 43341D60-7F10-4DDE-8474-C726E1B1DE42

In Mac OS X, FSEventsd is the userspace procedure, to which Mac kernel passes relevant notifications when file system is modified. Mac operating system uses FSEvents framework for registering directory tree modifications, made by various applications.

At this point, you need to identify the cause of this problem and then opt for corrective action through Mac Recovery.

Root of the issue

FSEventsd errors generally indicate hard drive file system corruption. The process runs at every boot like a daemon. Daemon is just a program that works in background and you can not control it. As FSEventsd notifies you and also keeps the record of file system problems on directory basis, this is usually used by Spotlight and Time Machine.


You can try out following things to resolve this issue:

You could try toggling disk journaling on and off. This is based on a fact that file system journaling make effect on the way in which FSEvents act with hard drive.

If issues remains, you need to verify the disk integrity using Disk Utility.

If none of the above works, format your hard drive and reinstall operating system.

Formatting removes all of the data from hard drive and need Data Recovery Mac. Recovery is best possible through third party Mac Recovery Software. The applications use high-end scanning techniques for successful recovery. They all you to Do It Yourself recovery as they have simple and rich graphical user interface.

Stellar Phoenix Macintosh Data Recovery is the most powerful and advanced tool to recover lost files, data, pictures, videos and hard drive volumes. It recover mac data from HFS, HFS+, HFSX, HFS Wrapper and FAT file system volumes. The application is compatible with Mac OS X 10.6, 10.5, 10.4 and 10.3.9.