Mac Update Stuck? How to Fix a Frozen macOS Update

Mac update stuck? Maybe the progress bar under the Apple logo hasn’t moved in ages, Software Update says “Preparing” forever, or your Mac won’t finish restarting after an update. Here’s what to do, step by step: when to wait, how to check Software Update, how to power off safely, free up storage, install the update in safe mode on Apple silicon and Intel-based Macs, and reinstall macOS from macOS Recovery without erasing your files.

Mac update stuck? Fix it step by step

1Step 1: Apple logo and progress bar? Give it time

A macOS update can take a while. The bar can move slowly or pause for a long time, and the screen may go black and restart several times.

WHAT TO DOKeep your Mac plugged into power. Apple suggests starting big updates in the evening so they can finish overnight.

Mac update stuck: Step 1: Apple logo and progress bar? Give it time

2Step 2: Still using your Mac? Check Software Update

Apple menu → System Settings → General → Software Update.

WHAT TO DOSays Preparing or Downloading and the bar still moves, even slowly? Let it keep going. Check your internet connection.

Step 2: Still using your Mac? Check Software Update

3Step 3: Truly frozen? Hold the power button, then start up again

Nothing has changed for a couple of hours? Press and hold the power button (Touch ID on laptops) for up to 10 seconds, until the Mac turns off.

WHAT TO DOPress it again to start up. The update often picks up where it left off. Still stuck? Unplug printers, drives and hubs, and try again.

Step 3: Truly frozen? Hold the power button, then start up again

4Step 4: Free up storage, restart, and try again

Updates need a lot of free space. Apple menu → System Settings → General → Storage.

WHAT TO DONearly full? Empty the Trash and remove files and apps you don’t need, or move them to an external drive. Then restart and update again.

Step 4: Free up storage, restart, and try again

5Step 5: Still won’t install? Try safe mode

Apple silicon: shut down, press and hold the power button until Loading startup options. Select your disk, hold Shift, click Continue in Safe Mode.

WHAT TO DOIntel-based Mac: press and hold Shift right after it starts, until the login window. You’ll see Safe Boot in the menu bar. Then run Software Update.

Step 5: Still won't install? Try safe mode

6Step 6: Still stuck? Reinstall macOS from macOS Recovery

Apple silicon: press and hold the power button until Loading startup options, click Options, then Continue. Intel: hold Command-R at startup.

WHAT TO DOChoose Reinstall macOS and follow the steps. It doesn’t erase your files, but back up with Time Machine first if you can.

Step 6: Still stuck? Reinstall macOS from macOS Recovery

Before you reinstall macOS

Back up with Time Machine first — If your Mac can still start up
Reinstalling keeps your files and apps — It replaces macOS itself
Asked to pick a disk? — Choose Macintosh HD, not Macintosh HD – Data
Asked to unlock the disk? — Enter the password you use to log in to your Mac
Never choose Erase to fix an update — That deletes everything. Call us first

Mac update stuck? When to call us

Your Mac won’t start up at all
It keeps going back to Recovery, or the update fails again and again
It asks for a password you don’t know
You’re not sure, or you don’t have a backup
Call 239-513-1960 — Or click Join Remote Session at naplescomputers.com. Walk-ins: 2308 Immokalee Rd

Recap: what to do when a Mac update is stuck

Give it time, keep it plugged in
Check Software Update’s progress
Truly frozen? Hold power, start again
Free up storage, restart, try again
Try installing in safe mode
Reinstall from macOS Recovery

Printable quick guide

Mac Update Stuck? (Apple Logo, Preparing, Recovery) (1-page quick guide PDF)

Frequently asked questions

How long should a Mac update take?

It varies. Apple says the Apple logo or progress bar can stay up much longer than usual during an update, and the bar can pause for long periods. The screen may go black and restart several times. Keep it plugged in, and consider starting big updates in the evening.

Is it safe to turn off my Mac during an update?

Only if it’s truly frozen, with no change for a couple of hours. Press and hold the power button (Touch ID on laptops) for up to 10 seconds until it turns off, then press it again to start up. The update often picks up where it left off.

Why does my Mac update say “Preparing” for so long?

Preparing can take a while, especially on a slow internet connection or when storage is nearly full. If the bar is still moving, let it keep going. If not, free up storage, restart, and try again, or try installing in safe mode.

How do I start my Mac in safe mode?

Apple silicon: shut down, press and hold the power button until you see the startup options, select your disk, hold Shift and click Continue in Safe Mode. Intel-based Mac: press and hold Shift right after it starts up until the login window appears.

Will reinstalling macOS from Recovery erase my files?

No. Reinstalling macOS from macOS Recovery keeps your files and apps; it replaces macOS itself. Still, back up with Time Machine first if you can, and never choose Erase in Disk Utility to fix an update. Not sure? Call Naples Computers at 239-513-1960.

Never erase your Mac’s disk to fix a stuck update: that deletes everything. Reinstalling macOS from macOS Recovery keeps your files and apps, but back up with Time Machine first if you can. Not sure? Call Naples Computers first.

Mac Update Stuck? What to Do