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How to restart a mac from a previous date how to#
How to restart a mac from a previous date update#
How to restart a mac from a previous date password#
How to restart a mac from a previous date Bluetooth#

Then, select iMessage, and last, select Sign Out. To sign out of iMessage, launch the Messages app, then select Messages > Preferences from the menu bar. Your iCloud data stays in iCloud and on any other devices that are signed in to iCloud with your Apple ID. Because you will be wiping your Mac later, you may choose Keep a Copy. You will be prompted to maintain a copy of your iCloud data on this Mac. If you're running macOS Mojave or earlier, go to the Apple menu > System Preferences, then iCloud, then finally Sign Out.

How to restart a mac from a previous date password#

Then input your Apple ID and password before clicking Deauthorize. Select Account > Authorizations > Deauthorize This Computer from the menu bar at the top of the screen or iTunes window. Open iTunes if you're running macOS Mojave or older. 02 Sign out of iTunes in macOS Mojave or earlier You can manually build a backup on an external hard drive or iCloud. If you have decided to wipe your Mac, here is a list of things to do before proceeding: 01 Make a backupīack up your data before restoring your device to factory settings by disabling some features and services, wiping your Mac, and reinstalling macOS.Įnsure that you have a current backup of your critical files. This can give you a feeling of operating a new Mac.ħ Things You Need to Do Before Erasing Your Mac Factory resetting your Mac reinstalls a clean and new version of macOS. Therefore, factory resetting your Mac is the best way to prepare it for a new owner.Īlso, if your Mac starts to misbehave, you might need to factory reset it to freshen it up. In this world of online privacy, no one wants their information at the fingertips of another person other than them. The major reason anyone would want to reset their Mac is if they are ready to sell it or swap it with another. Why Do You Need to Factory Reset Your Mac?

How to restart a mac from a previous date how to#

How to Factory Reset Mac Using Disk Utility?.Erase your hard drive and reinstall macOS.

How to restart a mac from a previous date Bluetooth#

Unpair Bluetooth devices you intend to retain (optional).

Sign out of iTunes in macOS Mojave or earlier.

7 Things You Need to Do Before Erasing Your Mac.

Why Do You Need to Factory Reset Your Mac?.

You can find this by using this command (which you can copy/paste into terminal): grep "Previous shutdown cause" /var/log/system. On older systems, you should be able to find the text "Previous shutdown cause" in your system log. For example, my last shutdown cause was "-128" which, unfortunately, is "unknown". To find the meaning of that number, you can use this site: Of course, expand the time if your restart happened more than 24 hours in the past.Īfter a while, you should see a message which contains a number indicating a reason. On newer macOS (macOS 10.12 and later) with the unified logging system, the processing of the text files doesn't show the whole story, so use the log show command below: log show -predicate 'eventMessage contains "Previous shutdown cause"' -last 24h Terminal can be found in the Utilities folder which is found in the Applications folder. I know Console provides details, but I rarely see it as more than a GUI to access the logs. I use Terminal a lot, so my answer will include commands used in that application.

How to restart a mac from a previous date update#

So how can I check why it just "restarted"? I want to know if my crashing problem came back after such a long time of stability, if asking Chrome to update somehow allowed the other pending upgrades to restart the OS, or if it was some other reason. The App Store is telling me that I still need to restart to complete updates. When I check when the last reboot was using uptime or System Information it tells me 32 days. I verified that it had restarted by switching to the Terminal app which showed the Restored text with a timestamp from about a minute ago. I'm using the scare quotes because I don't think it was rebooting from scratch since I didn't see the Apple logo with progress bar, which can be a little slow on my system. When I turned back to the computer it seemed to be "restarting". I clicked on the update button and wandered off to do something before it responded in any way. Google Chrome was getting slow and had been displaying the green update arrow for a day or two. I installed some OS updates in the past couple of days but chose not to restart yet. My Mac does sometimes crash and restart but hasn't done so for a couple of months. My Mac just "restarted" while I was looking away and I'd like to know if it was a crash or a postponed restart due to an update.