87MB 8" SMD hard disk.
Warranty sticker dated December 2, 1989
References:
http://www.classiccmp.org/pipermail/cctech/2009-February/102515.html
http://www.nwtinfotech.com/catalog/PRIAM/REF/80321.html
http://www.pinnaclemicro.com/computer/dsku.php?g=803-21&m=PRIAM