Software tower · floor

How to back up MacBook, and what a backup gets back

Asking how to back up MacBook gets four answers from Apple, and they are published in an order. The order is most of the answer: only the first runs without being asked, and only one of the four is described as bringing back something you deleted.

Time Machine

built in · automatic

Apple’s own feature. Uses “a USB drive or other storage device” to back up “all of your files, including apps, music, photos, email, and documents”.

iCloud

sync and store

Filed by Apple under “Sync and store data” — it keeps data “available anywhere you go”, and it “uses storage space in your iCloud storage plan”.

Dragging files

manual · no schedule

“Simply dragging them from your Mac to a USB drive.” To restore them, drag them back. Nothing automatic, and nothing to configure.

Something else

third party

Apple lists the category and then declines to endorse it: information about products not made by Apple is “provided without recommendation or endorsement”.

That first card is the recommendation, and the wording underneath it is the reason. Apple describes a Time Machine backup as something you can use “to recover your files, including older files, files that have been deleted, or files that are no longer accessible”. That sentence is not attached to any of the other three.

It is worth being exact about the second card rather than arguing with it. Apple does say iCloud keeps your data “safe, automatically backed up, and available anywhere you go”. But it files the section under “Sync and store data with iCloud”, and the promise it makes there is about access across devices, not about recovering an older version of something. The two are different jobs and Apple’s own headings separate them.

Setting up Time Machine — macOS Ventura 13 or later

Four steps, and two questions the Mac may ask you in the middle of them.

  1. Connect the drive, then from the Apple menu choose System Settings.
  2. Click General in the sidebar, then Time Machine on the right.
  3. Click Add Backup Disk, or the Add button (+).
  4. Select the drive and click Set Up Disk.
    · The Mac “might ask if you want to erase the storage device”.
    · It “might ask whether this computer should claim existing backups created on a different computer”.

Two of those steps deserve a second look. The erase question is the one that catches people using a drive that already has things on it — Apple’s options are “either erase it or select a different backup disk or volume”, and there is no third path. The claim existing backups question only appears when the drive has been used by another Mac, and claiming them makes them “part of the backups for this Mac”.

After that, nothing more is required: “your Mac immediately begins using the connected storage device to make backups”. To force one, choose Back Up Now from the Time Machine menu in the menu bar — the same menu stops, skips, or shows progress. If that menu is not there, Apple points at Menu Bar settings, Control Center settings, or Desktop & Menu Bar preferences.

The encryption password is not a formality

If you turn on Encrypt Backup, “you’re asked to create a backup password”. Apple follows that immediately with the consequence: “You will need it if you later attempt to restore files from the backup.” A password chosen carelessly during a two-minute setup is the same password standing between you and your files on the worst day of the year.

Old backups are deleted, on purpose

“The oldest backups are deleted when your backup disk is full.” Time Machine is not an archive that grows for ever; it is a rolling window whose length depends on how big the disk is. That single sentence is the reason the sizing rule below exists.

Ejecting matters

“Before disconnecting your backup disk, either eject the backup disk or shut down your Mac.” Pulling the cable is not covered by the automatic behaviour that follows it — Time Machine “will automatically resume its backup schedule” on reconnection, but the instruction about how to disconnect comes first.

Two rules about the drive itself. Apple asks for “a storage device with at least twice the storage capacity of your Mac” — the published example is a 1TB Mac wanting a 2TB backup disk — and adds that if Time Machine needs more room, “your Mac will let you know”. The second rule is the one people break: use the backup disk “only for Time Machine backups, not for storage of other files”. A drive doing two jobs is a drive whose free space is being decided by the wrong one.

The schedule is fixed unless you change it, and it is finer at the near end than at the far end. Time Machine keeps hourly backups for the past 24 hours, daily backups for the past month, and weekly backups for all previous months. To change how often it runs, open Time Machine Settings from that menu, click Options, and use the “Back up frequency” menu.

One reassurance about the first run, in Apple’s own words: “The first backup might take longer than you expect, but you can continue using your Mac while a backup is underway.” After that it “backs up only the files that changed since the previous backup, so future backups will be faster”. The slow one happens once.

The floors below take it in three directions: the setup itself, what Apple promises about getting things back, and the drive the whole arrangement depends on.

Where to start

Three ways in. If the drive is already connected, take the first.

“I have a drive and want this working.”
Setup and schedule — setting it up
“I need something back.”
What Apple promises — getting things back
“Which drive, and how big?”
The rules on the disk — the drive itself

Setting it up

Four steps, two questions in the middle of them, and a schedule that is already running before you look at it again.

Is the Mac actually chargingAmber means two opposite things, USB-C has no light at all, and the menu has four answers.Open this floor → Restoring an iPhone from a backupIt only happens at setup — so a phone already in use has to be erased first.Open this floor → Restarting a MacBookOne menu item and one checkbox — and the power button does two other things entirely.Open this floor → Factory resetting a MacBookIt erases settings, data and apps — and leaves the operating system exactly where it was.Open this floor → Checking a drive’s healthThe command every guide names has been deprecated — and Microsoft names the replacement.Open this floor → Backing up an iPhoneThe same job on the phone, where the choice between iCloud and a computer changes what you get.Open this floor → Freeing up iCloud storageWhat is actually taking the space, in the order Apple lists it.Open this floor → iCloud syncing pausedSeven different reasons with seven different remedies — and Apple warns against the obvious fix.Open this floor →

Getting things back

A backup is only the half of this you can see. These floors are about the other half — and about the password that stands in front of it.

Recovering deleted filesWhere a deleted file actually goes, and how long the window stays open.Open this floor → Transferring to a new iPhoneWhat moves across, what does not, and the step people skip.Open this floor → Recovering deleted photosThirty days, one album, and what happens on day thirty-one.Open this floor →

The drive itself

Twice the capacity of the Mac, used for nothing else, and ejected rather than unplugged. Three rules, all published, all easy to break.

Transferring photos to a computerGetting the originals off the phone and onto something you control.Open this floor → Clearing a cache on a MacTwo separate commands — and one of them also forgets which sites asked for your location.Open this floor → Deleting apps on a MacTwo different routes, and the one that leaves things behind.Open this floor →

What this tower will not do

It will not name a backup drive to buy. That needs drives bought, filled, and still working a year later, and until that has happened a recommendation here would be a guess with a link on it.

It will not tell you iCloud is not a backup. Apple’s own page says your data is automatically backed up there; what this page does instead is show which promises are attached to which method, and let the difference speak.

And it will not recommend a third-party backup utility. Apple lists the category without endorsing anything in it, and this page has tested nothing in it. What holds instead is simple: the four methods and the order Apple lists them in, the Time Machine setup steps for macOS Ventura 13 or later, the sizing rule of at least twice the capacity of the Mac, the instruction to use the backup disk only for Time Machine backups, the warning that the encryption password will be needed to restore, the statement that the oldest backups are deleted when the disk is full, the instruction to eject before disconnecting, and the hourly-daily-weekly schedule are quoted from Apple’s support documentation listed below.

Where this page got its facts

  1. Apple, Back up your Mac with Time Machine — Apple Support (that Time Machine can back up all files including apps, music, photos, email and documents; the instruction to use a storage device with at least twice the storage capacity of the Mac, with the 1TB-to-2TB example, and that the Mac will let you know if more space is needed; the instruction to use the backup disk only for Time Machine backups and not for storage of other files; the macOS Ventura 13 or later setup steps through System Settings, General, Time Machine, Add Backup Disk and Set Up Disk; that the Mac might ask to erase the device, with the options of erasing it or selecting a different disk or volume; that it might ask whether the computer should claim existing backups created on a different computer; that turning on Encrypt Backup requires creating a backup password which will be needed to restore files later; that the Mac begins making backups immediately after setup; the Back Up Now command in the Time Machine menu and the settings that show that menu; the schedule of hourly backups for the past 24 hours, daily backups for the past month and weekly backups for all previous months; that the oldest backups are deleted when the disk is full; the Options and Back up frequency settings; that the first backup might take longer than expected while the Mac remains usable and that later backups cover only changed files; and the instruction to eject the backup disk or shut down the Mac before disconnecting it) — support.apple.com, read 22 August 2026.
  2. Apple, How to back up your Mac — Apple Support, published 2 October 2025 (the four methods and the order they are given in; that Time Machine is the built-in backup feature and that a backup can be used to recover files including older files, files that have been deleted, or files that are no longer accessible; the section heading “Sync and store data with iCloud” and that iCloud keeps data safe, automatically backed up and available anywhere, while storing files in iCloud uses space in the iCloud storage plan; the manual method of dragging files to a USB drive and dragging them back to restore; and the note that information about products not manufactured by Apple is provided without recommendation or endorsement) — support.apple.com, read 22 August 2026.

Written by Alberto Gulotta

Founder and editor of AI Tools Primer, writing from Palermo, Italy. Thirty-five years of taking computers apart, starting with a Commodore 64 — the long version is on the about page.

Something wrong on this page? Write to aitoolsprimer@gmail.com and it gets fixed.

Written on 22 August 2026.

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