To get to the latest version of macOS you will update using the Mac App Store. Note that only the version of OS X your computer shipped with will be installed at this time. Apple has details on this here: About OS X Recovery basically, given high speed internet access and enough time, the recovery partition installed with Mac OS X Lion or OS X Mountain Lion should enable you to download the installer. Your computer will now download Mac OS X and install it. 9 If you don't have access to another computer: Try and get Internet Recovery to work. Using Internet Recovery for reinstalling macOS also has the added benefit of allowing you to erase the target hard drive before installing MacOS to it as well. Select your new hard drive and click Install. When you reinstall macOS from Recovery, you will not lose any data if you don’t erase your main drive. Because of this, you should ensure that all of your important documents. This is an Intel MacBook Pro, it had Big Sur installed before I wiped it, and when I go to install OS X, El Capitan is what it offers (but then there is no disk). The disk is already completely erased, so step 6 doesnt change anything either. Click Continue.Īgree to the software licensing agreement. Reinstalling OS X will erase all of the data on your computer. The physical SSD drive is visible on the left column though. You'll be notified that Apple will verify your eligibility to download and restore Mac OS X. In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar. In the Recovery app window, select Disk Utility, then click Continue. Choose Apple menu > Restart, then immediately press and hold Command-R. Select Quit Disk Utility from the Disk Utility menu at the top left corner of the display.Ĭhoose Reinstall Mac OS X from the Mac OS X Utilities menu.Ĭlick Continue to launch the installation wizard. If you’re reinstalling on a Mac laptop, plug in the power adapter. We'll create '1 Partition' with the name Macintosh SSD.Ĭlick the Options button and make sure GUID Partition Table is selected then click the OK button.Ĭlick the Apply button then click the Partition button to confirm you want to partition the drive. Select your new drive from the list of devices on the left.Ĭhoose the number of partitions you'd like for the device from the Partition layout dropdown, name the partition, and ensure its format is Mac OS Extended (Journaled). Choose Disk Utility from the Mac OS X Utilities screen. You can erase your Mac and use macOS Recovery, the built-in recovery system on your Mac, to reinstall macOS.
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