To erase you obviously need to boot from another medium or partition.ġ0.6 - hold c and boot off the 10.6 installer disk and select Disk Utility from the Utilities menuġ0.7 hold command and r keys and reboot into the hidden Lion Recovery Partition.įunny thing about Lion 10.7, you can't erase the whole drive while booted in the Lion Recovery Partition, because it's on the same drive your booted from. Wait for the entire process to be complete. Select Reinstall macOS from Utilities Window. Here’s a step-by-step guide on how to reinstall the macOS Sierra on your device without losing data: Select Restart from the menu. With Bootcamp, it's partition is named BOOTCAMP, don't select or the primary media, just your partition with OS X on it. How to Reinstall macOS Sierra without Losing Data. If the 750.16 GB TOSHIBA "media" is selected and erased, both partitions are gone. Selecting either the Macintosh HD or Macintosh HD 2 is selecting a partition on the 750.16 TOSHIBA "media" The trick between 2 and 3 methods is making sure of what your selecting in Disk Utility on the left side. Now, select the option Reinstall macOS Big Sur located above the Safari option and click Continue. This will take you to the macOS Utilities screen which is basically the recovery mode. Hover the mouse cursor over Options and click on Continue. See Erase your Mac.Well there are three ways to go about it.ġ: Simply reinstall OS X on top of the installed version and Software Updating until clear, this method keeps your files and most third party programs intact, unless those third party programs have "hooks" into OS X, which will get kicked out.Ģ: Erase just OS X partition and reinstall OS X again, this wipes out all user files and programs, it leaves other partitions alone, like your Bootcamp partition.ģ: Complete drive wipe of all partitions, all data, everything and reformat The startup drive and options will now show up on the screen. On a Mac with Apple silicon or an Intel-based Mac with the Apple T2 Security Chip, use Erase Assistant to reset your Mac to factory settings before you trade it in or sell it. In the settings where you select a volume, select your current macOS volume (in most cases, it’s the only one available). In the Recovery app window, select Reinstall for your macOS release, then click Continue. Reinstall your current version of macOS: Command-R. Reinstall your computer’s original version of macOS (including available updates): Option-Shift-Command-R. If you want to erase Mac and reinstall OS, CLICK 'Disk Utility' to erase the Macintosh HD Data partition of the startup drive. Consider backing up your data before you continue with the process. Install the latest version of macOS compatible with your computer: Option-Command-R. Here are the simple steps to complete the process: Press on 'Shift + Option + CMD + R' to boot your Mac into macOS Recovery. On an Intel-based Mac: Choose Apple menu > Restart, then immediately press and hold one of these key combinations, depending on what you want to do: Press the Restart button on your computers desktop. By using Internet Recovery, you may reinstall macOS without losing any data. Mac OS X may be reinstalled on top of an existing OS. MacOS can be reinstalled without wiping anything else. On a Mac with Apple silicon: Choose Apple menu > Shut Down, press and hold the power button until “Loading startup options” appears, select Options, click Continue, then follow the onscreen instructions. Does reinstall macOS delete everything No. Start up your computer in macOS Recovery: Get started with accessibility features.Use Sign in with Apple for apps and websites.Watch and listen together with SharePlay.Share and collaborate on files and folders.Leave all settings to default, then click Search for lost data. Select the drive that originally stored your data. Launch Disk Drill by opening Finder > Applications > Disk Drill app. Sync music, books, and more between devices For this article, we’ll be using the Disk Drill app.
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