How to Stop Mac from Sleeping? Prevent Sleep Mode on macOS

This guide explains how to prevent your Mac from automatically sleeping, offering solutions for various macOS versions and situations. Sometimes, keeping your Mac awake is necessary for long downloads, uploads, or other resource-intensive tasks.

macOS Sleep Mode Explained:

Sleep mode is a power-saving feature that dims the screen and suspends hard drive activity. Your Mac remains powered on but consumes minimal energy. Reactivation is quick, unlike a full shutdown. Different sleep modes exist, offering varying levels of power conservation.

Reasons to Disable Sleep Mode:

You might disable sleep mode for:

• Large file downloads or uploads.
• High-definition video or image processing.
• Maintaining VoIP or video call connectivity.
• Continuous background tasks like music playback or screen sharing.

Disabling Sleep Mode:

The method varies by macOS version:

macOS Sonoma & Ventura:

1. Open System Settings, then Lock Screen.
2. Set "Turn display off when inactive" to "Never".
3. Go to Energy Saver and disable "Prevent automatic sleeping when the display is off."

macOS Big Sur & Monterey:

1. Open System Preferences, then Energy Saver.
2. Set "Turn display off after" to "Never".
3. Check "Prevent your Mac from automatically sleeping when the display is off."

macOS Catalina & Older:

1. Open System Preferences, then Energy Saver.
2. Set "Computer sleep" to "Never". Uncheck "Put hard disks to sleep when possible".

Terminal Command (Temporary):

Use the caffeinate command in Terminal to temporarily prevent sleep. Close the Terminal window to re-enable sleep.

Keeping MacBook On with Lid Closed:

1. Connect to an external display.
2. In System Settings (Lock Screen), set "Turn display off on battery/power adapter when inactive" to "Never".

Scheduling Sleep:

macOS Ventura & Later (Terminal): Use sudo pmset repeat sleep MT HH:MM:SS (replace HH:MM:SS with the time) to schedule sleep. Use sudo pmset repeat cancel to cancel.

macOS Monterey & Earlier (System Preferences): Use the Schedule option in Energy Saver to set sleep and wake times.

Common Sleep Settings:

Settings control sleep duration, automatic sleep prevention, hard drive sleep, network wake, automatic wake-on-power, and power naps.

Third-Party Apps:

Apps like Amphetamine provide more granular sleep control.

Should You Disable Sleep Mode?

Generally, leave sleep mode enabled. However, temporarily disabling it for specific tasks is acceptable. Regular restarts or shutdowns are still recommended for optimal performance. Memory cleaning utilities can help maintain performance between reboots.

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