How do I reinstall OS X on Macbook Pro without CD?
Reinstall Your Mac’s OS Without an Installation Disc
- Turn your Mac on, while holding the CMD + R keys down.
- Select “Disk Utility” and click on Continue.
- Select the startup disk and go to the Erase Tab.
- Select the Mac OS Extended (Journaled), give a name to your disk and click on Erase.
- Disk Utility > Quit Disk Utility.
How do you reinstall OS on MacBook Pro?
Restart the computer. Immediately after the chime hold down the (Command-Option-Shift-R) keys until a globe appears. The Utility Menu will appear in from 5-20 minutes. Be patient. Select Disk Utility and click on the Continue button. When Disk Utility loads select the target drive (will be the out-dented entry) from the side list.
How do I reinstall Mac OS from recovery partition?
If you booted from a functioning recovery partition, click the “Reinstall macOS” button. The installation process will begin. If you booted from a USB disk, click “Continue” to advance to the installer. You’ll be asked which hard drive you want to install to. Choose the Macintosh HD you named earlier. Just like that, macOS will begin installing.
How do you install Mac OS on a USB hard drive?
If you booted from a functioning recovery partition, click the “Reinstall macOS” button. The installation process will begin. If you booted from an USB disk, click “Continue” to advance to the installer. You’ll be asked which hard drive you want to install to. Choose the Macintosh HD you named earlier. Just like that, macOS will begin installing.
Is there a way to boot from recovery on a Mac?
You can access recovery without a partition using Network Recovery: hold Command+Shift+R while turning on your Mac and it will download the Recovery features for you. Failing that, you can create a bootable USB installer for macOS Sierra, and boot from that by holding “Option” while turning on your Mac.