Many Mac owners simply close the lid of their MacBook or leave their iMac in sleep mode—and don’t turn off their computer for weeks. Others, on the contrary, shut it down every night, just like in the good old days. Both approaches are valid, but there’s a fundamental difference between restarting, shutting down, and putting it to sleep. Let’s explore how each of these modes impacts the performance, security, and health of your Mac—and how to properly restart your Apple computer. Incidentally, the latest version of macOS Tahoe 26.5 was recently released, and it introduces a new power-on mode for desktop Macs .
Finding out what’s best for your Mac: a regular reboot or a power cycle
What’s the difference between restarting and shutting down a Mac?
When you click “Restart” in the Apple menu , macOS terminates all running processes, unloads applications from RAM, and restarts the system . This doesn’t completely remove power from your Mac’s components—the logic board, some caches, and peripherals remain in a low-power state. This makes the restart noticeably faster.
Shutting down works differently. The Mac completely cuts off power to all components —the processor, RAM, and communication modules. The next time you press the power button, the computer undergoes what’s known as a cold boot: the firmware (Boot ROM) tests the hardware, the bootloader transfers control to the macOS kernel , and only then do user processes start. This takes longer, but it resets the system more deeply.
Here’s the key difference. A reboot is a software restart without a full hardware initialization. A power cycle is a hardware reset with a cold start that affects every single controller.
In practice, for routine tasks, there’s little difference—both a reboot and a shutdown clear RAM and restart processes equally well. macOS is built on Unix, and both actions reset the system at the software level . But if the problem lies deeper—in the power management controller or NVRAM settings—only a full shutdown will solve the problem. Sometimes, after updating macOS, the system may block certain applications from launching , and in this case, a reboot is also a good place to start.
Sleep Mode on a MacBook: Why It Matters
The iPhone doesn’t have the concept of “sleep” the way it does on a Mac. But for Apple computers, sleep mode is a core part of everyday use. You close the lid of your MacBook or leave your iMac unattended for a few minutes, and it goes to sleep.
Sleep mode is the most commonly used mode by Mac owners.
In sleep mode, your Mac consumes minimal power while keeping its RAM charged. All open apps, tabs, and documents remain in place—you open the lid and resume working in a split second. Apple Silicon Macs wake up instantly, just like an iPhone.
Moreover, macOS uses sleep mode for background tasks : Spotlight index updates, Time Machine backups, and checking for system and app updates. If you shut down your Mac every evening, some of these processes simply don’t have time to complete. Did you know this? Find more interesting news in our Telegram and MAX channels.
Sleep doesn’t replace a reboot—it doesn’t clear RAM or restart frozen processes. But for daily use between work sessions, it’s the most sensible mode.
When to restart your Mac and when to shut it down completely
When would which option be more appropriate?
Restarting solves most common problems on a Mac :
- the application is frozen or is working with errors;
- After updating macOS or applications, the system behaves strangely;
- Mac has become noticeably slower for no apparent reason;
- Wi-Fi, Bluetooth or external monitor does not connect;
- Some settings are not applied after changes.
In such situations, restarting clears RAM , reloads system daemons, and applies pending changes. This is often sufficient, especially if you haven’t turned off your Mac in more than two weeks.
A complete shutdown is useful in other cases:
- Mac freezes regularly and reboots help only for a short time;
- the computer overheats even when idle;
- you don’t plan to use your Mac for several days or longer;
- before installing or replacing RAM and other modules – Apple directly recommends this;
- If you need to transport a MacBook in your luggage, a switched-off laptop will definitely not wake up accidentally.
A full shutdown resets both the System Management Controller (SMC) and NVRAM, which can resolve issues that a simple restart doesn’t resolve, such as incorrect operation of fans, keyboard backlighting, or the charging indicator. If an app still isn’t working properly after a restart, it might be worth completely uninstalling it from your Mac and reinstalling it.
How often should you restart your Mac for stable operation?
Apple doesn’t publish official recommendations on this matter, but an unspoken standard has developed among specialists and experienced users.
It’s worth performing a regular reboot every one to two weeks . This allows the system to clear temporary files, apply updates, and restart background processes that can use unnecessary resources over time. If you notice your Mac is running slower, reboot more often.
A complete shutdown makes sense once a month or as needed. For example, if your computer is acting unstable after a macOS update or you notice problems with your peripherals.
The rest of the time, feel free to use sleep mode. Modern Macs with Apple Silicon chips are designed to run in this mode constantly, just like an iPhone. The MacBook Air’s sleep mode drains just a few percent overnight. If rebooting doesn’t help, or if you have any questions, contact us in our Telegram or MAX chats ; we’re sure to help.
All ways to restart a Mac
There are several options, from standard to emergency. Choose the one that best suits your situation.
The easiest way is through the Apple menu . Click the apple icon in the upper left corner of the screen and select “Restart…”. The system will prompt you to save your documents and close applications. If you want the windows to reopen in their original positions the next time you start Windows, leave the “Reopen windows when I sign in again” checkbox checked.
The easiest way to reboot is through this menu.
Keyboard shortcuts – for those who prefer the keyboard. Press Control + Command + the power button (or the eject key on older models). Your Mac will restart without any additional dialog boxes – keep in mind that unsaved data may be lost.
Using the Terminal is a method for advanced users. Open the Terminal and enter the command sudo shutdown -r now . You’ll be prompted to enter the administrator password. This method is helpful when the GUI freezes , but the Terminal is still responding.
You can also shut down your Mac using Terminal.
A forced restart is a last resort when your Mac is completely frozen and unresponsive. Press and hold the power button for 5-10 seconds until the screen goes dark. Wait a few seconds, and then turn the computer back on. On a MacBook with Touch ID , the power button is the Touch ID sensor on the keyboard .
Important: Forced shutdown prevents the system from terminating processes properly. Use it only if other methods fail.
Shutting Down Your Mac: All the Available Methods
Using the Apple menu : Open the Apple menu and select “Shut Down….” Your Mac will close applications, prompt you to save documents, and then shut down completely. If you’re using a MacBook, don’t close the lid until the screen goes completely dark. Otherwise, the laptop may not shut down properly and may take longer to boot up the next time
You can shut down your Mac using this menu.
Hotkey : Press Control + Option + Command + the power button . This will quit all applications and shut down your Mac. Alternatively, simply press the power button for 1.5 seconds, and a dialog box will appear with options to “Restart,” “Sleep,” and “Shut Down.”
Add one command to Terminal and your Mac will shut down.
From the Terminal , use the command sudo shutdown -h now . This works similarly to the menu option, but through the command line.
How to set your Mac to automatically turn off and turn on
iPhones have automatic restarts —you just need to enable it in Settings. On a Mac, things are more complicated. Before macOS Monterey (version 12), System Preferences had a handy “Schedule” section—you could set the automatic restart time with a couple of clicks.
Starting with macOS Ventura, Apple removed this option from the settings. The feature itself remains, but can now only be configured through Terminal using the pmset utility.
Here’s an example. To set your Mac to automatically turn on at 8:00 AM on weekdays and turn off at 11:00 PM, enter one command in Terminal:
Add the command to Terminal and confirm it. This is especially true for desktop computers.
sudo pmset repeat wakeorpoweron MTWRF 08:00:00 shutdown MTWRF 23:00:00
To check the current schedule, type pmset -g sched . To cancel the schedule, type sudo pmset repeat cancel .
Please note: for automatic shutdown to work, your Mac must be turned on and you must be logged in. If the computer is in sleep mode or on the lock screen, scheduled shutdown will not work .
Does Sleep Mode Harm My MacBook Battery?
The MacBook battery , like the iPhone, is lithium-polymer—it has no memory effect and doesn’t care whether you turn off the computer every day. Wear and tear is determined by the number of charge cycles , temperature, and runtime at extreme charge levels—around 0% and 100%.
I haven’t turned off my MacBook in almost two years, I just put it to sleep, and the battery feels great.
Sleep mode has virtually no impact on battery life. A MacBook in sleep mode consumes only 1-2 watts—less than charging an iPhone. Furthermore, macOS’s Optimized Battery Charging feature automatically ensures that the battery doesn’t remain at 100% for long periods of time .
A complete shutdown makes sense if you’re leaving your MacBook unused for several days or longer. In sleep mode, the battery drains slowly—after a couple of weeks of inactivity, you might find yourself with a completely empty battery. For long-term storage, it’s recommended to leave the battery at 50-60% .
What to do if your Mac is slow even after restarting
If rebooting or even a complete shutdown does not help, move on to more serious measures.
Check for updates. Open System Preferences -> General -> Software Update. Sometimes the issue has already been fixed in a newer version of macOS.
- Check what’s hogging your system. Open Activity Monitor (via Spotlight or from the Utilities folder) and sort processes by CPU or memory usage. If a process is consuming too many resources, terminate it or reinstall the app. By the way, we’ve covered in detail how to check your Mac’s performance and find bottlenecks.
- Boot into Safe Mode. On a Mac with Apple Silicon, shut down the computer, then hold down the power button until the disk menu appears. Select the startup disk, hold down Shift, and click “Continue in Safe Mode.” This mode boots macOS with a minimal set of extensions and clears system caches.
- Reset NVRAM. On an Intel Mac, shut down the computer, turn it on, and immediately hold down Option + Command + P + R for 20 seconds. On Apple Silicon Macs, there’s no separate NVRAM reset—it happens automatically when needed.
As a last resort, you can reinstall macOS using Recovery Mode . This preserves your data, but reinstalls the operating system. If that doesn’t help, it’s likely a hardware issue—it’s time to contact a service center.
