#Fresh install mac no startup disk how to#
#Fresh install mac no startup disk mac os#
#Fresh install mac no startup disk upgrade#
#Fresh install mac no startup disk pro#

Shift+Alt+Cmd+R : For the internet reinstall but the problem still persists.

Select the volume containing the bootable installer. Release the Option key when you see a dark screen showing your bootable volumes.

Cmd+R : For the normal reinstall but the problem still persists Press and hold the Option (Alt) key immediately after turning on or restarting the Mac.

You already tried to partition the disk multiple times but it keeps erroring with the Error: -61 Updated November 2020: Updated for macOS Big Sur's public release.I believe you followed the official guides and you tried to factory reset your Mac and you find yourself in this situation: the disk is locked and you cannot select it for re-installation Questions?Īny questions about performing a clean install? Let us know below in the comments.

Agree to the software terms and conditions.Īre you in the market for a new MacBook? Check out our favorites for the year.

Click Continue again when the installer window appears.

A clean install represents a fresh start, and it’s achieved by erasing all data from the Mac hard drive and then performing a fresh clean installation of MacOS Catalina onto that Mac. From here, jump to Setting up the installer to finish your work. Note 2: Running Cmd+Shift+G in Finder will allow you to easily jump to /macOS-installer. Note: We recommend to move the Install macOS.app into the /Applications folder, as well be executing commands from there.

Click on Reinstall a new copy of macOS. Some Mac users may wish to perform a clean install of MacOS Catalina onto a Mac. Mount it and youll find the installer application.Step 4: Reinstall a new copy of macOS Big Sur If Scheme is available, select GUID Partition Map.If your Mac is using APFS, select APFS from the format list.

#Fresh install mac no startup disk mac os#

If your Mac is using HFS+, select Mac OS Extended (Journaled) from the format list.

Enter a name for the file to be destroyed (Like macOS Mojave or something).

Click on Disk Utility in the OS X Utilities selector.Ĭlick on the Erase tab at the top of the window.

Give a name to the volume you are going to format. On the sidebar of Disk Utility, select the system volume which contains the operating system and click Erase. Select the Disk Utility option and click Continue.

Hold down Command-R when you hear the startup chime (or the screen turns black on newer Macs) and keep holding the keys until your computer reboots. Follow the steps below to get started: Step 1.

Select the virtual disk in Disk Utility left panel, then click Erase button at the top bar, it will pop. Select your startup drive and click Install.

Click Continue and agree to the terms and conditions. In the macOS Utilities window, click Reinstall a new copy of macOS. Then select Disk Utility in the macOS Utilities window, click the Continue button. Access System Preferences > Startup Disk and choose your Catalina installer.

Connect your Mac to the internet via Wi-Fi or Ethernet Click Install macOS High Sierra > Quit Install macOS menu item at the virtual machine window top-left corner to quit the Install macOS High Sierra wizard.

#Fresh install mac no startup disk how to#

How to create a bootable installer for macOS Big Sur.

#Fresh install mac no startup disk upgrade#

If you don't create a bootable drive for macOS Big Sur, you may have to install an older Mac operating system first and then upgrade to macOS Big Sur afterward. Wait for the process to finish before restarting your machine. Click the First Aid button to start fixing your drive.

#Fresh install mac no startup disk pro#

In El Capitan, Disk Utility looks slightly different, as you can see below. From the left pane, choose your MacBook Pro hard drive. What Disk Utility looks like in Lion through Yosemite. You'll need a copy of macOS Big Sur to perform a clean install later on. Then proceed to highlight your computer's hard drive select the Erase tab, make sure OS X Extended (Journaled) is selected, then hit the Erase button. Step 2: Create a bootable drive of macOS Big Surīefore you erase your current operating system, download macOS Big Sur from the Mac App Store.