Once you are done with the previous step, clone your external partition onto the internal partition. Make sure not to move the hard drive while it is in action. It is worthwhile to do so because it takes longer to read from bad sectors. Moreover, if bad sectors are found on the partition, map them off so that no data can be written on them ever.

Doing so will set all the bits to ‘zero’. When you use clone to boot, erase the internal boot partition or the complete drive by using the Disk Utility if Boot camp partition is not available. Check for some time whether the clone is working fine. You are now ready to use clone to boot up your computer by using the Startup Manager. Press and hold option/alt key down to reboot your system. You can use Mac backup software Carbon Copy Cleaner to clone the drive. Arrange a blank fresh external drive and clone the boot drive of your Mac OS X. Also, reboot the drive on completion of the process. You can reduce files by using Activity Monitor. Note that boot drive occupying more than 80% of the total disk capacity will not work. It is not mandatory to bring your HDD space usage below 50% however, doing so accelerates performance. Reduce it to less than 50% because the first half portion of the drive is much faster than the second due to a large number of sectors. Make your boot drive lighter by reducing the number of bulky files, such as movies and other video files. Moreover, if bad sectors lie on the hard drive, speed degrades. Here is a secure way that you can adapt to defragment your Mac hard drive.īefore initiating the process, know that only hard drives require you to defragment them, but not SSDs. However, when updates, upgrades, installation or reinstallation take place, you might need to defragment it once in a few years. Apple has embedded inbuilt safeguards that prevent fragmentation. If you are also trying to find a way to defragment your Mac hard drive, know that Mac OS X versions later than 10.2 do not need defragmentation. This is a common problem with all new Mac users. However, on Mac, I do not find a way to defragment the hard drive. I defragment my Windows hard drive at regular intervals to make my computer perform smooth. It was the first time that I got my hands on a Mac machine a few days back.

“I have been a Windows user since the time I started using a computer.

Defrag a mac hard drive