How to Set Up a New Mac Step-by-Step (Without the Bloat)

You unboxed a new MacBook last weekend, plugged in your old machine over Thunderbolt, and sat there for forty minutes while Migration Assistant copied 380 GB of accumulated nonsense onto a brand-new SSD. Three days later the new Mac feels exactly as cluttered as the one it replaced, with the same login items, the same orphaned kexts, the same Adobe folders from a subscription you canceled in 2023.

A clean setup is worth the extra hour. Here’s how to do it without dragging your old mess across the cable.

Decide first: migrate or start fresh

Migration Assistant is the path of least resistance, and that’s exactly the problem. It copies users, apps, settings, system extensions, login items, fonts, and printer drivers. Most of that you don’t want.

A fresh setup wins if any of these apply:

• Your old Mac is more than three years old
• You’ve upgraded macOS twice on the old machine without a clean install
• Storage on the old Mac was constantly under pressure
• You’re moving from Intel to Apple Silicon
• You’re setting up a work machine with different security requirements

Migrate if your old Mac is recent, well-maintained, and you genuinely use most of what’s on it. Otherwise, do the work to start clean. You’ll get the equivalent of a free 50–100 GB and a noticeably snappier baseline.

The first-boot checklist

Skip Apple’s defaults you don’t need. During Setup Assistant:

1. Region & keyboard — pick correctly the first time. Changing the keyboard layout later is fine; changing the region resets App Store currency.
2. Wi-Fi — connect, but skip account sign-in until later if you want to set up a local-only admin account first. Local admin + iCloud user is cleaner than one account doing both.
3. Apple ID — sign in once you’re at the desktop. Enabling iCloud Drive immediately starts a download of every file you’ve ever Optimized Storage’d.
4. Touch ID — enroll one finger now, add a second from System Settings later.
5. Siri, Screen Time, Analytics — turn off any you don’t use. Analytics in particular sends crash reports to Apple; harmless, but pointless if you never look at them.
6. FileVault — turn on. On Apple Silicon it’s effectively free.

Reboot. You should land at a desktop with maybe 25–35 GB used on a clean macOS Sonoma 14 or Sequoia 15 install.

Install only what you’ll use this week

The mistake everyone makes: installing thirty apps “just to have them ready.” Each one creates Application Support folders, login items, and helper daemons. Within a month, half of them are stale and you can’t remember what they do.

Install in tiers. Tier 1 is what you’d notice missing within the first hour:

• Browser of choice (if not Safari)
• Password manager
• Notes/writing app
• Mail client (if not Apple Mail)
• Slack/Discord/Teams if you use them daily

Tier 2 waits until you actually need it. When you go to do a task and realize a tool is missing, install it then. This is harder than it sounds because everyone has a list of “essential Mac apps.” Most of those lists are sponsored. Wait for the friction.

Tier 3 is everything else. Don’t install it now.

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Configure storage before you fill it

A new SSD is the easiest time to set sane defaults. Open System Settings → General → Storage and look at the recommendations panel.

• Optimize Storage — useful if you have a 256 GB or 512 GB Mac. It removes watched Apple TV purchases. Low value otherwise.
• Empty Trash Automatically — yes, turn this on. 30-day rolling deletion stops Trash becoming a 40 GB graveyard.
• Reduce Clutter — opens a file browser. Skip the Apple suggestions and just clear out the Downloads folder yourself.

Then make a decision about iCloud Drive’s “Optimize Mac Storage.” On a 256 GB MacBook Air, leave it on. On a 1 TB or 2 TB Mac where storage isn’t tight, turn it off — having the actual files locally is faster and survives offline use.

Set up backups before you have anything to lose

The backup conversation usually happens after the first scare. Don’t wait.

A two-tier setup is the realistic minimum:

• Time Machine to a USB-C SSD. A 1 TB Samsung T7 is around $90 and does the job indefinitely. Plug in once a week.
• Cloud backup for irreplaceable files — photos in iCloud Photos or Google Photos, documents in iCloud Drive or Dropbox, code in GitHub.

Time Machine alone is not enough. If your Mac is stolen with the backup drive in the bag, you have nothing. Cloud-only is fragile too — accounts get locked, sync breaks, files get accidentally deleted across all devices simultaneously.

Privacy and permissions, before apps ask

When you install an app and it requests microphone access, you click “OK” because you want to keep working. Three months later you’ve granted twelve apps mic access, eight of which you no longer use. Get ahead of this.

Open System Settings → Privacy & Security. Walk through each section:

• Location Services — turn off for everything that doesn’t actively need it. Weather and Maps yes, your text editor no.
• Camera, Microphone, Screen & System Audio Recording — should be empty on a fresh Mac. Keep it that way until apps ask.
• Full Disk Access — only grant when you understand why. Backup tools, search apps, and some developer tools legitimately need it. Most apps don’t.
• Accessibility — same logic. Window managers and automation tools need it. Random utilities don’t.

The default position should be: deny when the prompt appears, then go grant it manually if the app actually breaks.

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Skip the bloat that everyone installs anyway

A short list of things you probably don’t need on a 2026 Mac:

• Antivirus software — macOS has XProtect built in, plus app notarization. Third-party AV is mostly snake oil and a CPU tax.
• “Mac cleaner” suites that aren’t Sweep — half of them are scammy, the other half are bloated. A focused cleaner that doesn’t sit in the menu bar all day is enough.
• Driver software for printers — macOS handles most printers via AirPrint. Skip the manufacturer download.
• Bloated note-taking suites if you only need quick notes. Apple Notes covers 90% of cases.
• Crypto miners disguised as “fan control” or “battery optimizer” apps — yes, this happens. Stick to apps with clear, established reputations.

A maintenance rhythm worth keeping

Most people only think about Mac hygiene when something breaks. Set a baseline now and you skip that.

• Weekly: clear Downloads, empty Trash if it isn’t auto-emptying, restart the Mac (Apple Silicon happily runs for months but the kernel still benefits from a fresh start).
• Monthly: review login items in System Settings → General → Login Items, kill anything new and unwanted.
• Quarterly: uninstall apps you haven’t opened. Use an uninstaller, not just dragging to Trash, so the support folders go too.
• Yearly: the big audit — apps, fonts, browser extensions, granted permissions, old user accounts. Most people skip this. It’s the one that recovers the most space.

A Mac set up cleanly and maintained on this rhythm will feel essentially the same in three years as it does on day one. The Macs that turn into laggy nightmares are almost always the ones that got Migration Assistant’d at the start and then never had anything pruned again.

Take the extra hour. Future you will appreciate it.