![]() When you upgrade Mac from Yosemite to anything higher than High Sierra the disk format changes from Mac OS Extended to APFS. ![]() There could be two possible explanations: either encryption in Mojave is slower than in Yosemite or the disk format matters. So I upgraded my MBA to Mojave and the encryption time increased exactly 3 times. When I saw how much faster MBA was I was surprised because MBP is supposed to be faster. First, I tested the MBA with Yosemite and MBP with Mojave. Both run High Sierra and both have Bootcamp partitions.Īnother interesting observation is the difference in encryption time between MBA with Yosemite and Mojave. While hardware-wise both computers are vastly different they had some similarities. It is interesting that despite MBP 15-inch having the fastest SSD and most powerful CPU of all devices the time to encrypt and decrypt was close to the ones with Mac Mini. One moment it says it takes only 15 minutes, and a second later, it claims that “more than one day remaining.”Īnd it is also clear that the time to turn off FileVault (decrypt) is roughly similar to the time it takes to turn it on. The estimate on the screen continually fluctuates. The most frustrating thing is that Apple can’t give you even an approximate estimate. If FileVault is enabled later, the speed of encryption depends on the size of the drive and can range from 20 minutes to 5-6 hours. With older MacBooks, it takes less than 10 minutes to enable if the disk is almost empty. On a brand new MacBook (with T2 security chip), the process is instantaneous. How long it takes to enable/disable FileVault MacBook Pro 13-inch 2020 TouchBar, 16GB RAM.MacBook Pro 15-inch 2016 TouchBar, 16GB RAM.Then I erased the disk and reinstall OS, so around 10GB of space was used. ![]() First, I had it with 87GB used space on 121GB disk. MacBook Pro 13-inch early 2015, 8GB RAM.With MBA I performed two tests: one with OS Yosemite 10.10.5 and another with Mojave 10.14.5. MacBook Air 13-inch early 2014, 4GB RAM.The Macintosh HD drive size is 180Gb because the rest of the drive is under Bootcamp. ![]() To find out whether FileVault slows down Macs and how long encryption and decryption processes take, I tested the FileVault on 5 different Macs with the following configurations: The Impact of FileVault on Mac Performace FileVault can help prevent unauthorized access to your data and protect against data loss or theft.Īnd now, let’s go over the basics. When FileVault is enabled, all data on the drive is encrypted and can only be accessed with the correct login password or recovery key. So I answered the following: Is Mac Filevault Necessary?įileVault is a disk encryption feature in macOS that protects the data on your Mac by encrypting the hard drive.
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