I have heard, that if you put a bootable ZIP disk with system 7 on it into a zip drive on a machine running OS 8 or later, it will overwrite the driver. Making the disk un-bootable. Therefore, I was wondering if it is possible to make a ZIP read-only, so that I could back up my SE's two main ZIP disks (that have ethernet configured correctly, etc) on OS 8.

In the past I have cloned the disks to other ZIP's, so I do have some what of a backup.. but I would really rather have an image file saved to dropbox or onedrive.