If you've encountered a problem with macOS, the solution might be to reinstall the system on your Mac. This can be done by any Mac owner, but it can be a little bit complicated. You'll need to put your Mac into macOS Recovery, which gives you tools to diagnose problems on your Mac, as well as reinstall the operating system.
Yes, you can recover deleted files after emptying the recycle bin if you have backed up the files by Time Machine before. If you haven't, then you can't recover deleted files on mac without the help of software. UltData Mac data recovery is such a professional tool which is able to scan your deleted files on Mac and recover them easily.? Joyoshare UltFix for Mac comes out as a professional iOS system recovery utility to help you fix various iOS system issues and get your iPhone, iPad, iPod touch and Apple TV back to normal on Mac at home. Compared with the common iTunes restore, using Joyoshare UltFix to repair your iOS won't cause any data loss.
Here's how to reinstall macOS using Recovery mode.
Jun 01, 2020 macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu, which is also available in macOS Recovery.
Entering macOS Recovery
macOS Recovery has tools at its disposal that allow you to diagnose problems with your Mac's hard drive, reinstall macOS, and restore from a Time Machine backup. You can enter Recovery by pressing certain key combinations. The combination you choose will determine which version of macOS will be installed on your system when you select Reinstall macOS.
How to check your startup disk with Disk Utility in macOS Recovery mode
The first thing you'll want to do is make sure your Mac's startup disk is healthy. You'll need to use Disk Utility to do that.
How to erase your startup disk in macOS Recovery mode
If you need to start completely fresh, then you'll want to erase your startup disk using Disk Utility. If you want the content on your Mac to stay intact, skip to the next section.
How to reinstall macOS while in Recovery mode
The next step is to reinstall macOS.
Your Mac will now go through the normal macOS installation process, eventually restarting. If you're starting from scratch, you'll need to set up your Mac from scratch.
Questions?
If you have any more questions about reinstalling macOS on your Mac, let us know in the comments.
Updated December 2019: Everything is up to date through macOS Catalina.
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