How long does a macOS X reinstall take?

Typically, if you have a stock 5400 rpm drive, it takes about 30 – 45 minutes using a USB installer. If you are using the internet recovery route, it can take over an hour, depending on speed of internet etc. If you have a SSD using a USB installer, it typically takes 15 minutes or so.

How much data does it take to reinstall OS X?

So booting once to Internet Recovery Mode requires the download of about 650 MB and restoring your original operating system – which depends on your MacBook Air model – requires an additional download of about ~4.7 GB (Lion) to ~5.7 GB (Yosemite).

What do you do when macOS X installation Cannot be completed?

What to Do When the macOS Installation Couldn’t Be Completed

1. Restart Your Mac and Retry the Installation.
2. Set Your Mac to the Correct Date and Time.
3. Create Enough Free Space for macOS to Install.
4. Download a New Copy of the macOS Installer.
5. Reset the PRAM and NVRAM.
6. Run First Aid on Your Startup Disk.

How long does reinstalling macOS Big Sur take?

How long does Big Sur take to install? As per the users reporting on several social media portals, the Big Sur update for Apple MacBook 30 to 45 minutes generally to install.

How long does it take to reformat Mac?

I’d estimate anywhere from 1 to 5 hours would be the norm but it’s possible for it to take up to 12 hours. Make sure you erase everything securely before selling it so the buyer can’t recover your saved passwords. Several seconds if done properly: What to do before selling or giving away your Mac.

How long does macOS recovery take?

5) After your Mac has connected to the Wi-Fi network, it’ll download a recovery system image from Apple’s servers and start from it, giving you access to the recovery tools. Depending on your Internet connection, this may take anywhere from a couple of minutes to up to an hour, or longer.

How do I reinstall macOS without losing data?

Option #1: Reinstall macOS without Losing Data From Internet Recovery

1. Click the Apple icon>Restart.
2. Hold down the key combination: Command+R, you will see the Apple logo.
3. Then choose “Reinstall macOS Big Sur” from utilities window and click “Continue”.

How do I redownload Mac installer?

Reinstall macOS

1. Start up your computer in macOS Recovery:
2. In the Recovery app window, select Reinstall for your macOS release, then click Continue.
3. Follow the onscreen instructions.

Why is my macOS Big Sur not installing?

macOS Big Sur won’t install One way to solve this might be rebooting your Mac in Safe Mode: hold down Shift while rebooting and then restart the installation process. Shut down your Mac. Hold down Option + Command + P + R for about 20 seconds. Wait until your Mac restarts and try reinstalling macOS Big Sur.