Reset a forgotten Mac admin password with Apple ID, another admin account, or macOS Recovery, and understand FileVault recovery keys, Keychain effects, and future lockout prevention.
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Merge PDFs on Mac with Preview or Finder Quick Actions, reorder pages, combine images, enable Create PDF, compress large PDFs, and save a new combined file.
Auto-hide the Mac menu bar, bring it back, exit full-screen mode, understand external display behavior, organize menu bar icons, and check app-specific menus.
Install fonts on Mac with Font Book, choose User or Computer install location, add Apple cloud fonts, restart apps, validate fonts, resolve duplicates, and disable fonts without deleting.
Create Mac Notes checklists, convert existing lines, move completed items, reorder and indent checklist tasks, sync through iCloud, and share editable lists.
Factory reset Apple Silicon and Intel Macs, back up data, use Erase All Content and Settings, handle older Intel Recovery erasing, sign out of iMessage/iCloud, and avoid Activation Lock problems.
Force quit frozen Mac apps from the Force Quit window, Dock, Activity Monitor, keyboard shortcut, or power restart, and understand unsaved work and Auto Save recovery.
Erase and format a USB drive on Mac with Disk Utility, choose APFS, Mac OS Extended, exFAT, or FAT32, understand GUID vs MBR, use diskutil carefully, fix erase failures, and partition drives.
Hide Mac Desktop icons with Terminal, bring them back, use Stage Manager or Stacks instead, and understand files remain accessible in Finder.
Password-protect Mac files by creating an encrypted disk image in Disk Utility, choosing AES strength and image format, deleting the unencrypted original, and understanding password recovery, FileVault, and backups.