![]() ![]() So, users who regularly change Macs or external hard drives probably never need to defragment. The article also states that older hard drives are more prone to fragmentation, as the Mac OS X HFS Plus system automatically defragments itself through a process called Hot File Adaptive Clustering (HFC). If your Mac has an SSD rather than a hard drive, defragmentation will cause no significant benefits and will probably destroy your drive in the process. Defragging can cause more harm to the drive because the constant moving of files tires the drive out. 3: Hard drives are fastest at the beginning of the drive. Since the launch of OS X 10.2 in 2002, Macs have been able to defrag automatically. 2: You don't need to regularly defrag a Mac's hard drive, OS X writes small files in one batch, eliminating a lot of the need to defrag a Mac regularly. ![]() 2: Use a blank powered external drive (formatted GUID and OS X Extended Journaled in Disk Utility) and a copy of Carbon. How to safely defrag a Mac's hard drive 1: Reduce your boot drive user content (files, try movies first) so it's less than 50% of the drive filled (ideal) but. ![]()
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