Here’s how to clean install macOS Catalina from USB drive: Steps to install. Take a full backup of all your important data. Save it to the cloud or an external drive; You have to create a bootable USB drive. Here’s how you can create it. Make sure the USB drive is at least 8GB in size, and nothing else is stored on it. Step Four: Booting Your Mac From a USB Drive. Simply connect the USB drive you created to an open USB port on your Mac. Turn on the system or restart it if it is already on. Immediately press and hold the Option (Alt) key on the keyboard when it starts. You should now see an option to select the USB drive as a boot disk.
How To Download Catalina On Usb
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.
If you need to recover deleted files take a look at Mac Data Recovery Guru on our sister-site dedicated to data recovery.
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Download Catalina For Usb Installer
How To Install Catalina From Usb
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