You don't need a compatible Mac to download the file; it can be downloaded on Windows or Linux to create a bootable USB.
Getting the from a reliable source like Google Drive is a popular choice for users who need a fast, direct download without the restrictions of the Mac App Store. Whether you are performing a clean install, setting up a virtual machine, or reviving an older Mac, having the full installer in DMG format is essential. Why Download macOS Catalina 10.15.7 DMG via Google Drive?
A reliable backup source for legacy macOS versions like macOS Catalina 10.15.7 . download macos catalina 10157 dmg google drive best
Before installing, ensure your Mac meets the minimum hardware specifications: How to download and install macOS – Apple Support (UK)
Download Link 1 or Download Link 2 .
Google Drive’s servers typically provide much faster download speeds than standard web mirrors.
Note that Apple's direct DMG links are often "Combo Updates" rather than full installers. Use the Mac App Store if you are currently on a compatible Mac. System Requirements for macOS Catalina You don't need a compatible Mac to download
Avoid the "This version of macOS cannot be installed on this computer" error that often prevents downloads on newer or unsupported Macs. 📥 Recommended Download Links