Abstract
Perpendicular recording has been actively developed for future high density recording system. We studied the integration of the perpendicular recording system to the hard disk drive (HDD). Double layer perpendicular media and singlepole type perpendicular head were employed in 2.5"HDD along with the channel with a differential equalization. As a result of the integration test, it was confirmed that perpendicular recording 2.5"HDDs functioned well at the capacity of 20GB/pl and 30GB/pl.
