Cannot delete a .sparsebundle on / with permissions drwxr-xr-x@ 6 root wheel
sh-3.2# rm -rf filename.sparsebundle/
rm: filename.sparsebundle//token: Read-only file system



The sparsebundle probably resides on the read-only mounted system volume of a Catalina boot volume.


Boot to Recovery Mode.
(Unlock/mount your main Catalina boot volume with Disk Utility if it is encrypted)
Open Terminal in the menubar (Utilities > Terminal)
cd to the root of the main system volume (e.g. cd /Volumes/Macintosh\ HD/)
List the content with ls -la to check whether filename.sparsebundle resides there.


Remove the sparsebundle with rm -dR filename.sparsebundle.
Reboot to your main volume.