Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some product or feature? Which versions are earlier (older) or later (newer, more recent) than the version currently installed? To find out, learn which version is installed now.
If your macOS isn't up to date, you may be able to update to a later version.
Data erasure software for OS X 10.10 Yosemite. In order to permanently delete files or erase hard drive under Mac OS X 10.10 Yosemite, you need to download data erasure software for OS X 10.10 Yosemite. AweEraser for Mac is a good choice. It supports to permanently delete files in OS X 10.10 Yosemite, erase hard drive under OS X 10.10 Yosemite. Then click 'Next.' If you want to recover the deleted file on the partition of Mac OS X, so you should choose 'Quick Scan.' Quick Scan: This mode can recover deleted files on a partition or device, such as files deleted by Command + delete, emptied from the trash or removed by other software, etc. If additional data have not overwritten files. Dec 31, 2016 There may be a folder left behind at the main level of your disk, called 'OS X Install Data'. If you have that folder, remove it. I'd suggest then updating your computer to 10.11.6 and install the ensuing security updates to be sure you're getting all the latest bug fixes for El Capitan.
Which macOS version is installed?
From the Apple menu in the corner of your screen, choose About This Mac. You'll see the macOS name, such as macOS Mojave, followed by its version number. If some product or feature requires you to know the build number as well, click the version number to see it.
This example shows macOS Catalina version 10.15 build 19A583.
Which macOS version is the latest?
These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Catalina. And as updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.
If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.
macOS | Latest version |
---|---|
macOS Catalina | 10.15.5 |
macOS Mojave | 10.14.6 |
macOS High Sierra | 10.13.6 |
macOS Sierra | 10.12.6 |
OS X El Capitan | 10.11.6 |
OS X Yosemite | 10.10.5 |
OS X Mavericks | 10.9.5 |
OS X Mountain Lion | 10.8.5 |
OS X Lion | 10.7.5 |
Mac OS X Snow Leopard | 10.6.8 |
Mac OS X Leopard | 10.5.8 |
Mac OS X Tiger | 10.4.11 |
Mac OS X Panther | 10.3.9 |
Mac OS X Jaguar | 10.2.8 |
Mac OS X Puma | 10.1.5 |
Mac OS X Cheetah | 10.0.4 |
Learn more
- Always use the macOS that came with your Mac, or a compatible newer version.
- Learn how to reinstall macOS from macOS Recovery.
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