Purchasers of the IBM AT were reporting some dealers were installing inferior drives into the computer without disclosing the fact. To help buyers and for industry education, Core developed the DiskP program, later replaced by the COREtest (DOS based), to identify sub-standard products by providing a visual demonstration of the speed and comparative measurements of hard disk drives and controllers. Many computer publications, hardware manufacturers, distributors, dealersBorrett, Lloyd. ""Megabyte Tarnish," PC Australia, September 1985; url accessed March 8, 2010 and independent evaluation firms relied on COREtest for product comparison, which made COREtest the industry standard and most often quoted benchmark. As these programs were provide without charge and freely available from BBS, computer magazines and dealers, it is believed there was an installed base of over million copies worldwide promoting Core technology and education.
