I set back my older OS (Mojave) using Time Machine. But now, two disk images appear on my desktop:
'Update' and 'MacOS HD - Data'.
When I remove them from my desktop, they keep appearing after each startup.
Is there a way to permanently remove them?
Wil Tirion
iMac 27″ 5K, macOS 10.14
Later versions of macOS utilize multiple APFS volumes for a macOS installation....these are remnants from the later versions of macOS 10.15+. To downgrade macOS you need to perform a clean install of macOS which involves first erasing the whole physical drive (Intel Macs only) followed by reinstalling macOS & restoring from backup.
Assuming you are using an older version of macOS, then theoretically you should be able to unmount those two volumes, then use Disk Utility to delete them.
How to remove disk images, after a restore from TimeMachine?
