Quick Answer To securely erase a Mac drive in Disk Utility, open Disk Utility, choose View > Show All Devices, select the correct physical drive or volume, click Erase, choose a format, and confirm. For an internal startup drive, you must first start the Mac in macOS Recovery because macOS cannot erase the disk it … Read more
Quick Answer Open Terminal from Applications > Utilities, then use du to measure folder sizes and sort to rank them. To find the largest items in your home folder, run: du -sh ~/* 2>/dev/null | sort -h The largest entries appear at the bottom. This command only reads storage information; it does not delete or … Read more
Quick Answer To connect two external monitors to a MacBook, first confirm that your MacBook model supports two external displays at the resolutions and refresh rates you want. Check Apple menu > About This Mac to identify the model, then compare its display limit with Apple’s technical specifications. Connect the monitors directly to compatible Thunderbolt … Read more
AirPlay lets you wirelessly send your MacBook’s screen, video, photos, presentations, and audio to a compatible TV. You can mirror the MacBook display so the TV shows the same content, or use the TV as a separate display to extend your desktop. To connect, make sure your MacBook and compatible TV or Apple TV are … Read more
Quick Answer To check how much free space remains on your Mac’s startup disk, open Terminal and run: df -h / The df command reports available disk space, while -h displays the numbers in an easier-to-read format such as gigabytes. The / tells Terminal to check the volume used by the startup system. To see … Read more
The Notes app can lock individual notes or an entire folder of locked notes. To lock a note on a Mac, open it in Notes, click the Lock button in the toolbar, choose Lock Note, and create or enter a Notes password. Depending on your settings and Mac, you may also be able to unlock … Read more
macOS includes built-in storage recommendations that can help you reclaim space without manually searching through every folder. The most useful option is Optimize Storage, which removes watched movies and TV shows after you finish them and keeps only recent email attachments on your Mac when space is needed. Your original content remains available through the … Read more
Quick Answer To show file extensions for all files on your Mac, open Finder, choose Finder > Settings, select Advanced, and turn on Show all filename extensions. To show or hide the extension for one file: Select the file in Finder. Choose File > Get Info. Expand Name & Extension. Select or clear Hide extension. … Read more
Quick Answer Choose APFS if the drive will be used only with Macs, especially if it is an SSD or will store a Time Machine backup. APFS is Apple’s modern file system and supports features such as encryption, snapshots, and space sharing. Choose exFAT if you need to move files between a Mac and a … Read more
Screen Time on a Mac shows how you spend time in apps and websites, helps you set app-use limits, schedules periods of reduced access, and applies content restrictions. To open it, choose Apple menu > System Settings > Screen Time. Older versions of macOS may use System Preferences instead of System Settings. Quick Answer … Read more