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Check for and install macOS updates, prepare with backup, power, storage, and Wi-Fi, enable automatic updates, and fix stuck downloads.

Sync iMessage and SMS/MMS between iPhone and Mac by enabling Messages in iCloud, Text Message Forwarding, matching Apple IDs, and iCloud storage checks.

Move files, apps, accounts, and settings to a new Mac with Migration Assistant, direct Mac transfer, Time Machine, cable tips, and storage checks.

Turn on FileVault disk encryption on Mac, choose iCloud unlock or a recovery key, monitor encryption, turn it off, and understand what it protects.

Set up Mac Hot Corners, assign actions, add modifier keys to avoid accidental triggers, and use them across displays.

Split PDFs on Mac using Preview by dragging pages out, saving a page range through Print, trimming unwanted pages, and compressing the result.

Create, assign, format, switch, remove, and troubleshoot email signatures in the Mail app on Mac, including simple logo/image signatures.

Set up Family Sharing on Mac, invite members, create a child Apple Account, share iCloud+, enable Ask to Buy, and manage members.

Copy Mac screenshots directly to the clipboard with Control shortcuts or the Screenshot toolbar, then paste without saving a file.

Find large files on Mac using Storage Management and Finder, then review downloads, backups, attachments, and Trash before deleting.