Disk Manager 4.0.3: Incompatible With System 7.5.2 (8/95)

I'm having problems installing System 7.5.2 on a third party hard drive. I'm using Disk Manager Mac 4.0.3 to format the hard drive. What am I doing wrong?
Ontrack Computer Systems, Inc. (the manufacturer of Disk Manager Mac) reports that Disk Manager Mac is not compatible with System Software version 7.5.2.

No additional information is available at this time.


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Published Date: Feb 19, 2012