Also, the DMG file is the disk image used to create the bootable USB. So the user might actually need instructions on making a bootable USB from the DMG or from the Install app.
They also mentioned "hot," which could be a typo or slang. Maybe they mean recent or the latest in their area? Or perhaps they're referring to a high-speed download. But in any case, the main issue is getting the macOS Catalina DMG without the App Store method. Also, the DMG file is the disk image
I should outline the steps clearly, mention the need for the App Store download, provide the link to Apple's support page for older macOS versions, and explain the steps to create a bootable USB. Also, warn against third-party downloads to avoid malware. If they can't download from the App Store, suggest alternative methods, but only the safe ones. Maybe they mean recent or the latest in their area
If the user can't download it from the Mac App Store, they might need to use the "Install macOS Catalina" app via a different method. Some sources suggest using the -seed or developer account options, but that's probably not relevant here. Alternatively, there are third-party tools like UTM or others that bundle macOS ISOs, but I should caution against piracy or illegal downloads. I should outline the steps clearly, mention the
First, they mentioned "clean installation," which is different from an upgrade. So they probably want to start fresh, not keep their existing macOS setup. That means they might need to create a bootable USB drive using the DMG file or the Install macOS app from the App Store.
Also, check if the user is on a Mac that supports Catalina. Macs older than 2015-2016 might not support Catalina. They need to verify their Mac's compatibility.