What’s needed for a clean install on a Mac
- A backup of the disk before it’s erased. Two options are to use Duplicate (a free utility which can copy and paste an entire bootable volume), or Mac Backup Guru (a paid, fully featured backup utility with unique incremental backups capability) for that. Here is a detailed guide for the process.
- A Mac operating system installer. MacOS Big Sur can be downloaded by clicking here.
Open Disk Utility (you can find in the “ Utilities ” folder of your “ Applications ” folder, or you can use Spotlight to find it). Click the radioactive button (“ Burn “), which will open up a window where you will have to select the “ InstallESD.dmg ” that you previously moved or copied. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or.pkg installer. Use the 'createinstallmedia' command in Terminal.
Create Mac Os Install Disk
If you need to recover deleted files take a look at Mac Data Recovery Guru on our sister-site dedicated to data recovery.
![Install Install](https://i.ytimg.com/vi/FWayakRZA04/maxresdefault.jpg)
![Create macos install disk Create macos install disk](https://support.apple.com/library/content/dam/edam/applecare/images/en_US/macos/Big-Sur/macos-big-sur-recovery-reinstall-macos.jpg)
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Install Macos From Another Mac
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