

- Upgrade mac os x from a dmg file install#
- Upgrade mac os x from a dmg file upgrade#
- Upgrade mac os x from a dmg file Pc#
Upgrade mac os x from a dmg file Pc#
Instructions: Use the iMac as a Windows PC monitor If you want to use an Apple iMac as a PC monitor, you can find step-by-step instructions here.the dmg file is consists of 4.9GB and I will show you how you can download the dmg file.
Upgrade mac os x from a dmg file install#

Here you will be asked for the folder from which the DMG will be created. Next, open the hard disk utility and select "File> New Image> Image from Folder" at the top left. I would just do without dots and special characters in the file name so that there would be no problems on other operating or file systems.

I named the folder "macOS Catalina Installer 10-15" but you can be creative here. Note: Make sure to back up your Mac prior to installing macOS Catalina. For a clean install, it is better to download the dmg file and make an installer USB.
Upgrade mac os x from a dmg file upgrade#
Instead, it is an app called Install macOS Catalina, which is used to make the upgrade from current macOS to Catalina. If you want to keep a copy in the Applications folder, hold down the ALT key while dragging and dropping. But the actual downloaded file is not an dmg file. To do this, we create a new folder on the desktop and drag the "macOS Catalina Installer" into it. Instructions: Create DMG image from folder We copy the installer from the programs folder into a new directory that we created on the desktop. Instead, it is an app called Install macOS Catalina, which is used to make the upgrade from current macOS to Catalina.
