Although I know it is not advised to use drivespace disk compression with Iomega Zip drives, I have - and have found out why it isn't advised!!
Although all my six zip disks originally compressed OK, and were accessible in the normal way, now, some months later, suddenly three of my six zip disks, the dblspace.000 volume files will not mount, either automatically on boot-up, or subsequently through drivespace, whether as removable or non-removable.
Drivespace either states that the volume file is damaged, and advises use of scandisk (which reports no problems) or simply shows "program error" (invalid page fault....) and closes.
The Zip disks in question show a dblspace.000 file size of between 95Mb and 135Mb, and free space of only 134kb, even though when first compressed, the drivespace properties showed 190Mb available on each disk.
Is there some utility available which can remount or repair these volume files, or recover the content therefrom??