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 other product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.
If OS X isn't booting completely or is locking up, you can't launch Disk Utility. To repair your boot hard drive if OS X isn't running, you need to boot your Mac from El Capitan's Recovery HD volume. Hold down the Option key immediately after you hear the start up chord to display the Mac OS X boot menu, and choose the Recovery HD volume. Or, you can boot your system from the original Mac OS X installation CD and run Disk Utility from the Installation menu. Your start-up disk is automatically verified and repaired (if necessary) during the boot procedure, so you really don't need to worry about checking the start-up disk. Hard Disk Sentinel – Check HDD/SSD Performance & Health. HDSentinel is a hard disk monitoring.
If OS X isn't booting completely or is locking up, you can't launch Disk Utility. To repair your boot hard drive if OS X isn't running, you need to boot your Mac from El Capitan's Recovery HD volume. Hold down the Option key immediately after you hear the start up chord to display the Mac OS X boot menu, and choose the Recovery HD volume. Or, you can boot your system from the original Mac OS X installation CD and run Disk Utility from the Installation menu. Your start-up disk is automatically verified and repaired (if necessary) during the boot procedure, so you really don't need to worry about checking the start-up disk. Hard Disk Sentinel – Check HDD/SSD Performance & Health. HDSentinel is a hard disk monitoring.
If your macOS isn't up to date, you may be able to update to a later version.
Check Disk Space Mac Os
Which macOS version is installed?
From the Apple menu in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Mojave, followed by its version number. If you need to know the build number as well, click the version number to see it.
This example shows macOS Catalina version 10.15 build 19A583.
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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. 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 that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.
macOS | Latest version |
---|---|
macOS Catalina | 10.15.7 |
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 |
Let macOS manage space between multiple volumes
With Apple File System (APFS), the file system introduced in macOS 10.13, you can easily add and delete volumes on your storage devices. APFS-formatted volumes automatically grow and shrink—you never have to repartition a storage device again.
Keep your external storage devices secure
When you get a new flash drive or other storage device, format it as APFS and encrypt it with a password to protect its contents.
Give your disk a checkup
Chkdsk For Mac Os
If you're having problems with a disk, Disk Utility can check the disk and repair problems it detects.
Check Disk For Mac Os High Sierra
To browse the Disk Utility User Guide, click Table of Contents at the top of the page.