If you disconnect the cable, then as soon as macOS boots it’ll take over the USB connection and disallow communication with the T2; Some users have reported checkra1n crashing when Chinese is set as the only system language. For example, the Startup Manager may show this: CaseyTNG   Recovery-10.13.2  Recovery-10.12.6   Recovery-10.11. To return to the Recovery app, choose Disk Utility > Quit Disk Utility. Option-Command-R: Start up from macOS Recovery over the internet. Type it in and hit Return on your keyboard. If requested, choose an administrator account, click Next, enter the password for the account, then click Continue. If requested, type the network’s password. Is the Recovery HD volume updated to the newer OS, or do you end up back with OS X Lion? In the Recovery window, select Disk Utility, then click Continue. As a refresher: Find and click the Time Machine icon to enter Time Machine. But here is the path to check it: Click the App Store icon. Disk Utility: Repair or erase your disk. Turn off Wi-Fi: Click the Wi-Fi menu icon, then choose Turn Wi-Fi Off. If that's not possible, use the closest match you have available. How to reinstall macOS from macOS Recovery — Apple Support. Both of the recovery modes let you re-install OS X, but the version of OS X that is installed onto the Mac will be different depending on the type of recovery mode used. Option-Command (⌘)-R: Use this key combination if you want to upgrade to the latest version of a compatible macOS version. Step 3. Your Mac restarts automatically while restoring your system from Time Machine or reinstalling macOS. Watch later. Select your disk in the list on the left, then click the Erase button. As you can see below, the operating system version is displayed in the format “ 11.” followed by some numbers and other dots - in our case, 11.0.1. In the Recovery app window, select Disk Utility, then click Continue. Click the First Aid button, click Run, then follow the onscreen instructions. Enter an administrator user name and password. When macOS Recovery Doesn’t Start. When Apple released OS X Lion in 2010, it included a hidden partition known as the Recovery HD on the Mac's startup drive. Exif Untrasher is another completely free Mac data recovery tool that mainly … In the Secure Boot pane, choose one of the following security options: Full Security: Ensures that only your current OS, or signed operating system software currently trusted by Apple, can run. If you didn't buy a new Mac recently, you probably updated the operating system when Apple made an upgrade available, perhaps several times. Time Machine System Restore: Restore your data from a Time Machine backup. Change the firmware password: Click Change Password, enter the old password, enter a new password and verify it, then click Change Password. See Start up your Intel-based Mac in macOS Recovery and Quit macOS Recovery. If the Wi-Fi menu icon doesn’t contain any bars , Wi-Fi is turned on but isn’t connected to a wireless network. Quick Navigation Method #1. Turn on your Mac or restart it as with normal Recovery Mode. 2 User Comments Press Shift - Option - Command - R to install the version of macOS that came with your Mac, or the version closest to it that's still available. Which one do you use, and how can you tell which version of the Mac OS will be installed, should you need to reinstall the OS? If the Wi-Fi menu icon (in the upper-right corner of the … After you restart your Mac, changes to the firmware password take effect. Join a closed network: Click the Wi-Fi menu icon, then choose Join Other Network. These smaller updates are available from the “Updates” tab in the Mac App Store app. 1) In the Apple menu choose Restart, or power on your Mac. Download the installation package of iBeesoft Data Recovery for Mac on your computer. Medium Security: Allows any version of signed operating system software ever trusted by Apple to run. Startup Disk: Set the startup disk for your Mac. How to erase, install or reinstall macOS in Recovery Mode. You can use the apps in macOS Recovery on an Intel-based Mac to repair your internal disk, reinstall macOS, restore your files from a Time Machine backup, set security options, and more. When you see the macOS Utilities menu, your Mac is in the macOS Recovery Mode. The easiest way to find out which version of the Mac OS is tied to a Recovery HD partition is to reboot your Mac using the Startup Manager. You can turn on, turn off, or change the firmware password using Startup Security Utility. Use this key combination to reinstall the latest macOS that was installed on your system, or to use the other apps in macOS Recovery. Check the version history of Do Your Data Recovery for Mac to find the information on edition history, new features, release time, etc. sw_vers command – Show Mac OS X operating system version. If you’re connected to the internet, you can use Safari to search for more information on the Apple Support website. In a worst-case scenario, you may have to manually run fsck commands from a terminal in single-user mode. In the Disk Utility app, select your disk in the list on the left. See Erase and reinstall macOS. From the Apple menu  in the corner … Recover Saved Over Excel File on Mac with the Built-in Tool Method #3. Note: If you’re using an older version of the Mac operating system, it may be called “OS X” instead of macOS. Along with the introduction of a locally stored … Here in the following, I’m going to tell you how to recover previous version of Excel file on Mac in Microsoft Excel for Mac 2011, 2016 and 2020. After the disk has been erased, choose Disk Utility > Quit Disk Utility. If you previously created a Time Machine backup, use Restore From Time Machine Backup to restore everything on your computer to its previous condition. 6. Also write down your network settings from Network preferences to make it easier to get connected again after reinstalling macOS. In the Time Machine System Restore app, follow the onscreen instructions. Step 2. Competing computing systems offer similar capabilities, but one thing that sets the Mac's Recovery HD system apart from others is that the operating system is installed using the internet to download a fresh install of macOS or OS X when needed. 2) Hold down the Command (⌘) – R combination immediately upon hearing the startup chime. Starting up Mac OS into Recovery Mode allows for various important troubleshooting and recovery features, including the ability to reinstall MacOS, repair a hard drive with Disk Utility, erase a boot disk, restore a Mac from a Time Machine backup, adjusting and setting Firmware passwords, as well as some … Enter the network’s name and, if requested, the network’s password. While this official troubleshooter works well … Get the Latest Tech News Delivered Every Day. This brings up the Startup Manager, which displays all the bootable devices connected to your Mac, including your Recovery HD partitions. The Recovery HD partitions are displayed in the format Recovery-xx.xx.xx, where the xx's are replaced with the version number of the Mac operating system associated with the Recovery HD partition. Run your mac in recovery mode as above. The command line to check macOS version is: sw_vers -productVersion. Choose Apple menu > Startup Disk. So, now you have multiple Recovery HD partitions on various bootable volumes. Find the lost Mac files that you want to recover, and click "Restore". The version number says “10.13.4” because we’ve installed the latest security updates. When it happens, it will try to connect to macOS Recovery online. Find an automatically saved or recovered file. Tom Nelson is an engineer, programmer, network manager, and computer network and systems designer who has written for Other World Computing,and others. Startup Security Utility: Set the security policies for your Mac. Information in this article applies to macOS Big Sur (11) through OS X Lion (10.7). See Use Startup Security Utility to set a firmware password and Use Startup Security Utility to set secure boot options. When you buy a new Mac, it has the most current version of the operating system installed on it, and that's what is tied to the Recovery HD. Connect any external drive or USB flash drive that contains a Recovery HD partition and hold down the Option key while you power on or restart your Mac. The idea is a simple one; you can't have too many working recovery HD volumes, should you ever need to make use of one. So, what if your Mac had OS X Mountain Lion (10.8) when you bought it, and then you updated to OS X Mavericks (10.9) or OS X Yosemite (10.10)? If the Wi-Fi menu icon (in the upper-right corner of the screen) contains one or more bars , Wi-Fi is turned on and connected to a wireless network. As soon as you hear the startup chime, press and hold Command (?) Shift-Option-Command (⌘)-R : Use this key combination if you want to reinstall the macOS version that was originally installed on your Mac when it was first purchased. When the firmware password is turned on, each time you start up from macOS Recovery or from a storage device other than the one selected in Startup Disk preferences, you need to enter the firmware password. How to check your startup disk with Disk Utility in macOS Recovery mode Turn on Wi-Fi: Click the Wi-Fi menu icon, then choose Turn Wi-Fi On. This mode requires a network connection at software installation time. If you have multiple volumes on your disk, select the volume you want to recover, then click Next. Identifying the OS Version Linked to a Recovery HD. Allow booting from external or removable media: Does not restrict the ability to boot from any devices. Turn off the firmware password: Click Turn Off Firmware Password, enter the password, then click Turn Off Password. To return to the Recovery app, choose Startup Disk > Quit Startup Disk. To return to the macOS Recovery window, choose Disk Utility > Quit Disk Utility. In the Recovery app, choose Utilities > Startup Security Utility. Select the Recovery HD partition you want to use from this list. If you erase and reinstall macOS, your user accounts, network settings, and all of the files and folders on your Mac are deleted. Moreover, internet recovery enables you to reinstall the macOS version when your interval drive is damaged and corrupt. The main principle of internet recovery is to troubleshoot OS X and restore the Mac system to its default settings. Unable to Start Up My Mac - How Can I Repair My Hard Drive? + Option (?) Use this key combination to reinstall macOS and upgrade to the latest version of macOS that’s compatible with your Mac. The following apps are available in macOS Recovery on an Intel-based Mac: Recovery: The Recovery app opens when your computer starts up in macOS Recovery. 1. To return to the Recovery app, choose Safari > Quit Safari. Create Your Own Mac Recovery HD on Any Drive, Perform a Clean Install of OS X Mountain Lion on Startup Drive, How to Create an Emergency Mac OS Boot Device Using a USB Flash Drive, How to Perform a Clean Install of macOS Sierra, Repair Your Mac's Drives With Disk Utility's First Aid, Minimum Requirements for OS X Mountain Lion (10.8), Perform a Clean Install of OS X El Capitan (10.11), Perform a Clean Install of OS X Yosemite on Your Mac, Using Boot Camp Assistant to Install Windows on Your Mac, How to Create a Bootable Flash Drive for Installing OS X Lion, Use the Recovery HD Volume to Reinstall or Troubleshoot OS X. Recall that there are three different ways to boot into macOS Recovery. See Reinstall macOS. The most often used way to enter Recovery Mode (on a Mac with an Intel processor) is this: Click … In the Recovery app window, click Reinstall macOS, then click Continue. To connect to the internet, you can use a wireless or wired network connection. Shut down your Mac: Choose Apple menu > Shut Down. It's because you're starting macOS Recovery via the Internet. Which macOS version is installed? Recovery HD is known as macOS Recovery on Macs with macOS rather than OS X, but the functions are the same. Copyright © 2021 Apple Inc. All rights reserved. This becomes apparent when you encounter startup problems with your Mac's drive, only to discover that the Recovery HD also isn't working because it's part of the same startup drive. Important: Only use your Time Machine backup to restore information to the computer that is the source of the backup. Exif Untrasher. If you have issues with your computer or if you started your computer and saw the macOS Recovery window, you may need to repair your computer’s internal disk. Scroll down to find the preferred OS X version. Choose a different startup disk before restarting your Mac: Choose Apple menu > Startup Disk, select a startup disk, then click Restart. Identifying the OS Version Linked to a Recovery HD The easiest way to find out which version of the Mac OS is tied to a Recovery HD partition is to reboot your Mac using the Startup Manager. In the Recovery app window, select Restore From Time Machine Backup, then click Continue. Note that Safari browser plug-ins and extensions are disabled in macOS Recovery. If requested, enter an administrator user name and password. Start up your Intel-based Mac in macOS Recovery, Use Startup Security Utility to set a firmware password, Use Startup Security Utility to set secure boot options. During installation, when you're setting up a drive, macOS effectively sets up second one. Open up Launchpad on Mac, click "Others". In the Recovery app, choose Utilities > Startup Security Utility. When you perform a major upgrade, the Recovery HD or macOS Recovery partition is also upgraded to the same version of macOS or OS X. If the Wi-Fi menu icon has a slash through it , Wi-Fi is turned off. 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