NTI CD Image
From Just Solve the File Format Problem
NewTech Infosystems, Inc (NTI)[1] developed optical-disc burning software for Windows and Macintosh. CD-Maker, DVD-Maker and the current Media Maker software could save a layout file to the CDM format, but could also save a disk image in the NCD format.[2][3]
File Identification
NCD CD Image files begin with the hex values 88CD77CD