No. I'm booting from the regular Apple internal drive. Looking through logs, it seems that the disk image seems to have to do with trying to have two Google Drives mounted.
On another Mac Airbook, (running MacOS Sonoma 14.7.), it simply won't mount the second Google Drive. It shows two Google Drives in the sidebar, but for one, it says that it can't connect. And that's fine.
On my desktop, though, (running Sequoia 15.2) it shows only one Google Drive, but it also shows a mount point in Disk Utility, that constantly won't let me unmount it, that seems to be related to Google Drive. The mount point is protected by the fact that it is "busy", so I can't get rid of it. Logs say something like:
2024-12-30T06:34:05.158ZI [9431:MediaManagerThread] media_repo.cc:157:RemoveInvalidMedia media_id=A4B97E21-blahblahblah-C37536 should be removed. Status: OK
2024-12-30T06:34:05.158ZI [9431:MediaManagerThread] device_status_service.cc:344:AddMediaInternal [Media: media_id="A4B97E21-blahblahblah C37536" name="Creedence11M6270.SECUREPKITRUSTSTOREASSETS_SECUREPKITRUSTSTORE_Cryptex" file_system="APFS" mount_point(raw)="" device_type="Virtual" device_number=16777232 writable="true"] was removed during addition.
2024-12-30T06:34:05.158ZE [9416:stderr_thread] stderr: 2024-12-29 22:34:05.146 Google Drive[864:9262] HIToolbox: received notification of WindowServer event port death.
2024-12-30T06:34:05.158ZE [9416:stderr_thread] stderr: 2024-12-29 22:34:05.146 Google Drive[864:9262] port matched the WindowServer port created in BindCGSToRunLoop
I'd be happy to ignore it if I could. But when I went to save new files, (not yet having a location), it seemed to be looking forever, (hanging). I now believe it's looking hopelessly for a Google Drive that it can't access, even though I would not want to store the new file there. I suspect the Finder and the saving routine in apps are just confused. But, it does render the computer useless if I want to create a new file, and choose its location.
Any other insights are welcome. I may take it up with Google support. I really don't need two Google Drives, but I do have two Google accounts, and I use them both for different things.