Get back to the cloning software and reverse clone all of your data back to the main boot HDD.Using Disk Utility fully erase data on Macintosh HD.Test out the clone to make sure it operates correctly.Reboot your Mac holding down the Option Key and boot from the clone drive using Startup Manager.Create an identical clone of your boot partition (Macintosh HD) on an external drive formatted as OS X Extended Journaled.Find and download a trusted drive cloning software.Scan and Clean your system of redundant leftover application data.Remove outdated and unneeded files from your hard drive (try to fit all of your data in under 50% of total drive capacity).Instead of trying to defrag a disk from within the system itself, this method will have you create a clone of your current HDD, wipe the slate clean, and import things back, yet this time in the right order fitting all the clusters. Those of you who are willing to take the high road and invest more time towards achieving reliable results, will favor this approach. It’s also worth noting that this method does not guarantee that you will defrag your disk in its entirety. Run the software of your choice and follow the onscreen instructions.Make a backup of your data in cloud or external drive.Run a trusted cleaning app to get rid of outdated and corrupted support data.Review all of your files and take out the Trash (ideally try to stay within 50% of your total HDD capacity).Find and download a reliable third-party defragmentation software.At this point, making backups just goes without saying.Įssentially, to defragment your Mac’s hard drive you will have to: The drill is, no matter how good the software is, you always run the risk of something not going as intended, and if it does - you’re stuck. Hands down, running defrag software on live system is the quicker way of getting it done. Let’s get it straight, defragmenting your drive will require a third-party application as Apple does not provide any native defrag tools. After all, this should be done only once every few years and reclaimed drive performance will definitely be worth it. Defragmenting Hard Drive on Macįully defragmenting your HDD is a fairly complicated thing to do on a Mac, though don’t let it stop you from doing so in the first place. It is worth mentioning that it will not repair physically damaged sectors, but only solve the soft bad sector errors. Running a defraggler helps contain maximum of your files on the first 50% of the drive which results in it performing faster.ĭefrag also provides a solution to some of the more serious hard drive performance issues like failing sectors on the drive. HDDs operate faster in the first half due to having more sectors on the track with less travel time taking the heads to reach them. In order for you to keep the hard drive running at its top speed, it is recommended to keep your data on the first 50% of the drive. On the other hand, once in every few years defragmentation is still needed due to app installs, big updates and flow of other large files on your Mac HDD. On one hand, this eliminates the need for regular defragmentation. As a result, there is no need for defragging them. Windows breaks up all files when writing them into clusters, while OS X does not fragment the small ones. Among other things, they differ in the way they approach writing files on disk. It’s no secret that macOS is different from Windows. To deal with the issue on Windows OS, you would have to defragment your HDD, but can you defrag a Mac? Does Defragmentation for Mac Work? These include scattered empty clusters on the hard disk that had appeared as a result of multiple reads and writes performed. Bogged down performance can be caused by a number of reasons. However, despite being considered close to computer perfection, Macs are not immune to slow-downs. Delivering speedy and smooth performance, Macs are known to be fast and reliable.
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